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A person holding a brown bowl in their hand. Free-form manufacturing ct machine packaging, health medical.

A person holding a brown bowl in their hand. Free-form manufacturing c...

Visual patterns: A hand holding a cup of tea / A hand holding a cup in front of a fern - public domain stock photo.

Man Reading , "ECO DOMINUS", anonymous Roman-Bolognese

Man Reading , "ECO DOMINUS", anonymous Roman-Bolognese

Anonymous, Italian, Roman-Bolognese, 17th century Public domain photograph of 17th century Italian drawing, free to use, no copyright restrictions image - Picryl description

Man Reading , "ECO DOMINUS", anonymous Roman-Bolognese

Man Reading , "ECO DOMINUS", anonymous Roman-Bolognese

Public domain scan of 17th-century drawing, free to use, no copyright restrictions image - Picryl description

Pona, Eco - Age [Blank], Year: [Blank] - First Creek Mounted Volunteers, I-S - Raised Directly by the Confederate Government

Pona, Eco - Age [Blank], Year: [Blank] - First Creek Mounted Volunteer...

Carded Records Showing Military Service of Soldiers Who Fought in Confederate Organizations

Eco. George Unit #4-- cultivating cotton

Eco. George Unit #4-- cultivating cotton

Photograph shows man with two horses cultivating cotton. Copyright by Keystone View Co. Caption card tracings: Farm machinery; photog. Index; Cotton Industry; Shelf.

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician removes foam insulation revealing the fastener holes on the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission. The covers will be removed for access to the feed-through connectors. Following the failure of some of the tank's engine cutoff sensors, or ECO sensors, during propellant tanking for launch attempts on Dec. 6 and Dec. 9, a tanking test was conducted on Dec. 18 to aid in troubleshooting the cause. Technicians spliced test wiring into the ECO sensor electrical system and used time domain reflectometry equipment to help locate the electrical anomaly. Results of the tanking test pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. During the holiday period, workers from Lockheed Martin will begin inspecting and testing the connector. Shuttle program managers will meet on Dec. 27 to review the test and analysis, and decide on a forward plan. Photo credit: NASA/Kim Shiflett KSC-07pd3656

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Allian...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician removes foam insulation revealing the fastener holes on the covers over the feed-through connector box on the external tank fo... More

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members of the STS-122 crew arrive for launch. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim and Leland Melvin. They were greeted by Doug Lyons (left, yellow shirt), launch director for the mission, and Pete Nickolenko (right, green shirt), lead shuttle test director. Eyharts and Schlegel represent the European Space Agency. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0125

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members...

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members of the STS-122 crew arrive for launch. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim and Lel... More

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connector to which the replacement feed-through connector in the engine cutoff, or ECO, sensor system on space shuttle Atlantis' external tank will be installed. The feed-through connector passes the wires from the inside of the tank to the outside. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The pins in the replacement connector have been precisely soldered to create a connection that allows sensors inside the tank to send signals to the computers onboard Atlantis. The work is being done on Launch Pad 39A. Space shuttle Atlantis is now targeted for launch on Feb. 7. Photo credit: NASA/George Shelton KSC-08pd0038

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connect...

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connector to which the replacement feed-through connector in the engine cutoff, or ECO, sensor system on space shuttle Atlantis' external tank will... More

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) and Pilot Alan Poindexter arrive at NASA's Kennedy Space Center in a shuttle training aircraft jet for launch aboard space shuttle Atlantis on Feb. 7. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0121

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) a...

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) and Pilot Alan Poindexter arrive at NASA's Kennedy Space Center in a shuttle training aircraft jet for launch aboard space shuttle Atlantis o... More

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space Center, STS-122 Commander Steve Frick is greeted by Doug Lyons, launch director for STS-122 mission. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0122

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space ...

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space Center, STS-122 Commander Steve Frick is greeted by Doug Lyons, launch director for STS-122 mission. The crew's arrival signals the imminent... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician gets ready to place the cover over the engine cutoff, or ECO, sensor system connector and wiring on space shuttle Atlantis' external tank. The feed-through connector passes the wires from the inside of the tank to the outside. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The pins in the replacement connector were precisely soldered to create a connection that allows sensors inside the tank to send signals to the computers onboard Atlantis. The launch date for the shuttle's STS-122 mission has now been targeted for Feb. 7. Photo credit: NASA/Kim Shiflett KSC-08pd0071

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician gets ready to place the cover over the engine cutoff, or ECO, sensor system connector and wiring on space shuttle A... More

Italiaanse schrijver Umberto Eco

Italiaanse schrijver Umberto Eco

Italiaanse schrijver Umberto Eco Public domain photograph - 1984 by The Algemeen Nederlandsch Fotobureau (ANeFo), also known as the General Dutch Photo Bureau, a Dutch photography agency, Netherlands. - Picryl... More

Boekenconferentie in Amsterdam; Umberto Eco (links)

Boekenconferentie in Amsterdam; Umberto Eco (links)

Boekenconferentie in Amsterdam; Umberto Eco (links) en minister Brinkman Public domain photograph - 1987 by The Algemeen Nederlandsch Fotobureau (ANeFo), also known as the General Dutch Photo Bureau, a Dutch p... More

Boekenconferentie in Amsterdam; schrijver Umberto Eco

Boekenconferentie in Amsterdam; schrijver Umberto Eco

Boekenconferentie in Amsterdam; schrijver Umberto Eco Public domain photograph - 1987 by The Algemeen Nederlandsch Fotobureau (ANeFo), also known as the General Dutch Photo Bureau, a Dutch photography agency, ... More

Boekenconferentie in Amsterdam; Umberto Eco (links)

Boekenconferentie in Amsterdam; Umberto Eco (links)

Boekenconferentie in Amsterdam; Umberto Eco (links) en minister Brinkman Public domain photograph - 1987 by The Algemeen Nederlandsch Fotobureau (ANeFo), also known as the General Dutch Photo Bureau, a Dutch p... More

Right side profile medium shot as US Army Sergeant Frederik Webb (left) and SPECIALIST Arron Lincoln (right) Eco company 1ST 508 out of Vicenza Italy prepare parachutes at Aviano Air Base Italy for Operation Rapid Resolve II, a show of force air drop in Bosnia, 17Jul00. A left side front view medium shot of a US Air Force C-130 Hercules is seen in the background

Right side profile medium shot as US Army Sergeant Frederik Webb (left...

The original finding aid described this photograph as: Subject Operation/Series: RAPID RESOLVE II Base: Aviano Air Base State: Pordenone Country: Italy (ITA) Scene Camera Operator: SRA Aaron Allmon Ii, USA... More

US Air Force (USAF) Captain (CPT) Glenn A. Clinch, Electronic Combat Officer (ECO), 961st Airborne Air Control Squadron (AACS), mans his duty station aboard a USAF E-3B Airborne Warning and Control Systems (AWACS) aircraft, while flying a mission during Exercise COPE TIGER '02. Cope Tiger is an annual, multinational exercise in the Asia-Pacific region which promotes closer relations and enables air force units in the region to sharpen air combat skills and practice interoperability with US Forces

US Air Force (USAF) Captain (CPT) Glenn A. Clinch, Electronic Combat O...

The original finding aid described this photograph as: Subject Operation/Series: COPE TIGER '02 Country: Thailand (THA) Scene Major Command Shown: PACAF Scene Camera Operator: TSGT James E. Lotz, USAF Rele... More

US Air Force (USAF) Captain (CPT) Glenn A. Clinch, Electronic Combat Officer (ECO), 961st Airborne Air Control Squadron (AACS), mans his duty station aboard a USAF E-3B Airborne Warning and Control Systems (AWACS) aircraft, while flying a mission during Exercise COPE TIGER '02. Cope Tiger is an annual, multinational exercise in the Asia-Pacific region which promotes closer relations and enables air force units in the region to sharpen air combat skills and practice interoperability with US Forces

US Air Force (USAF) Captain (CPT) Glenn A. Clinch, Electronic Combat O...

The original finding aid described this photograph as: Subject Operation/Series: COPE TIGER '02 Country: Thailand (THA) Scene Major Command Shown: PACAF Scene Camera Operator: TSGT James E. Lotz, USAF Rele... More

A US Navy (USN) pilot and Electronic Countermeasure Officers (ECO) check-out their EA-6B Prowler before a mission in support of Operation NORTHERN WATCH, from Incirlik Air Base (AB), Turkey

A US Navy (USN) pilot and Electronic Countermeasure Officers (ECO) che...

The original finding aid described this photograph as: Subject Operation/Series: NORTHERN WATCH Base: Incirlik Air Base, Adana Country: Turkey (TUR) Scene Major Command Shown: ACC Scene Camera Operator: TS... More

US Marine Corps (USMC) Private First Class (PFC) Zaroga, Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), places rocks along the outer border of a terrain model at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Zaroga, Eco Company, ...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Company, and USMC Corporal (CPL) Duffy, Headquarters and Service Company, both with 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), work to correctly place a road on a terrain model at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Co...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Corporal (CPL) Duffy, Headquarters and Service Company, oversees USMC Private First Class (PFC) Florez (left), Eco Company, both with 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), as he places a road on a terrain model they are building at CROCODILE 2003

US Marine Corps (USMC) Corporal (CPL) Duffy, Headquarters and Service ...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Private First Class (PFC) Overturf, Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), uses an E-Tool (USMC Improved Entrenching Tool) to create the outer border of a terrain model at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Overturf, Eco Company...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Lance Corporal (LCPL) Malone, Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), puts the finishing touches on a road on a terrain model at CROCODILE 2003

US Marine Corps (USMC) Lance Corporal (LCPL) Malone, Eco Company, 2nd ...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), touches up part of a road while building a terrain model at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Co...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Private First Class (PFC) Gonzalez, Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), creates the outer border of a terrain model with stones at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Gonzalez, Eco Company...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Company, 2nd Battalion, 3rd Marine Regiment (2/3), Marine Corps Base Hawaii (MCBH), Hawaii (HI), places a road on a terrain model they are building at CROCODILE 2003

US Marine Corps (USMC) Private First Class (PFC) Florez (left), Eco Co...

The original finding aid described this photograph as: Subject Operation/Series: CROCODILE 2003 Base: Camp Samuel Hill State: Queensland Country: Australia (AUS) Scene Major Command Shown: H Scene Camera ... More

Public domain pictures, EPA 412_DSP_MetalRecycling_025

Public domain pictures, EPA 412_DSP_MetalRecycling_025

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_025.jpg Date Picture Taken: 8/14/2007 7:26:54 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_010

Public domain pictures, EPA 412_DSP_MetalRecycling_010

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_010.jpg Date Picture Taken: 8/14/2007 6:51:07 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_018

Public domain pictures, EPA 412_DSP_MetalRecycling_018

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_018.jpg Date Picture Taken: 8/14/2007 7:20:34 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_011

Public domain pictures, EPA 412_DSP_MetalRecycling_011

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_011.jpg Date Picture Taken: 8/14/2007 7:06:50 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_005

Public domain pictures, EPA 412_DSP_MetalRecycling_005

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_005.jpg Date Picture Taken: 8/14/2007 6:58:14 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_020

Public domain pictures, EPA 412_DSP_MetalRecycling_020

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_020.jpg Date Picture Taken: 8/14/2007 10:14:03 PM Byline: Eric Vance Byline Title: Chief Ph... More

Public domain pictures, EPA 412_DSP_MetalRecycling_004

Public domain pictures, EPA 412_DSP_MetalRecycling_004

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_004.jpg Date Picture Taken: 8/14/2007 6:48:06 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_024

Public domain pictures, EPA 412_DSP_MetalRecycling_024

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_024.jpg Date Picture Taken: 8/14/2007 7:28:52 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_003

Public domain pictures, EPA 412_DSP_MetalRecycling_003

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_003.jpg Date Picture Taken: 8/14/2007 10:56:00 PM Byline: Eric Vance Byline Title: Chief Ph... More

Public domain pictures, EPA 412_DSP_MetalRecycling_013

Public domain pictures, EPA 412_DSP_MetalRecycling_013

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_013.jpg Date Picture Taken: 8/14/2007 7:08:25 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_002

Public domain pictures, EPA 412_DSP_MetalRecycling_002

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_002.jpg Date Picture Taken: 8/14/2007 6:44:38 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_022

Public domain pictures, EPA 412_DSP_MetalRecycling_022

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_022.jpg Date Picture Taken: 8/14/2007 7:21:38 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_014

Public domain pictures, EPA 412_DSP_MetalRecycling_014

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_014.jpg Date Picture Taken: 8/14/2007 7:09:08 PM Byline: Eric Vance Byline Title: Chief Pho... More

Public domain pictures, EPA 412_DSP_MetalRecycling_019

Public domain pictures, EPA 412_DSP_MetalRecycling_019

The original digital file had the following descriptive metadata embedded in its header: Name: 412_DSP_MetalRecycling_019.jpg Date Picture Taken: 8/14/2007 7:15:58 PM Byline: Eric Vance Byline Title: Chief Pho... More

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platform. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3584

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shu...

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platf... More

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platform. At left is seen the rotating service structure, which was rolled away for the launch. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3585

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shu...

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platf... More

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlantis, still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platform. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3581

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlan...

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlantis, still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platform. Shuttle... More

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platform. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3582

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shu...

KENNEDY SPACE CENTER, FLA. -- In the late afternoon shadows, space shuttle Atlantis is still poised on the pad after its launch on mission STS-122 was postponed Thursday. It sits atop the mobile launcher platfo... More

KENNEDY SPACE CENTER, FLA. -- Against a sunset sky streaked with pink, lights on the fixed and rotating service structures illuminate Launch Pad 39A where space shuttle Atlantis is still poised after its launch on mission STS-122 was postponed Thursday. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3586

KENNEDY SPACE CENTER, FLA. -- Against a sunset sky streaked with pink...

KENNEDY SPACE CENTER, FLA. -- Against a sunset sky streaked with pink, lights on the fixed and rotating service structures illuminate Launch Pad 39A where space shuttle Atlantis is still poised after its launc... More

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlantis, still poised on the pad after its launch on mission STS-122 was postponed Thursday. In the background is the Atlantic Ocean. Shuttle program managers decided at 9:56 a.m. to postpone the launch because of an issue with a fuel cut-off sensor system inside the external fuel tank. This is one of several systems that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. During countdown activities this morning, two sensors failed a routine prelaunch check. There are four engine cut-off, or ECO, sensors inside the liquid hydrogen section of the tank, and Launch Commit Criteria require three of the four sensor systems to be functioning properly. The tank's liquid oxygen and liquid hydrogen was drained from the tank, and preparations will begin for a possible launch attempt Friday. NASA's launch rules have a preplanned procedure that states in the case of ECO sensor system failure, engineers need to drain the tank and verify all the sensors are working as they go dry. Atlantis carries the Columbus Laboratory, the European Space Agency's largest contribution to the construction of the space station. When permanently attached to Node 2, the laboratory will carry out experiments in materials science, fluid physics and biosciences, as well as perform a number of technological applications, in a microgravity environment. Photo credit: NASA/George Shelton KSC-07pd3583

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlan...

KENNEDY SPACE CENTER, FLA. -- Shadows spill across space shuttle Atlantis, still poised on the pad after its launch on mission STS-122 was postponed Thursday. In the background is the Atlantic Ocean. Shuttle p... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Stanley Love heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3601

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Stanley Love heads for the plane for the return trip to Houston. The crew is flying bac... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Commander Steve Frick heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3604

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NAS...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Commander Steve Frick heads for the plane for the return trip to Houston. The crew is flying back to Hous... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Pilot Alan Poindexter heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3600

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Pilot Alan Poindexter heads for the plane for the return trip to Houston. The crew is flying back to Houst... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Rex Walheim heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3602

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Rex Walheim heads for the plane for the return trip to Houston. The crew is flying back... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, the plane carrying the STS-122 crew taxis toward the runway for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3605

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NA...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, the plane carrying the STS-122 crew taxis toward the runway for the return trip to Houston. The crew is flying b... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Leopold Eyharts heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. Eyharts was scheduled to join the Expedition 16 crew aboard the International Space Station. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3603

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NAS...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Leopold Eyharts heads for the plane for the return trip to Houston. The crew is flying... More

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Leland Melvin heads for the plane for the return trip to Houston. The crew is flying back to Houston after launch of space shuttle Atlantis was delayed when a failure occurred in a fuel sensor system while the vehicle's external fuel tank was being filled. One of the four engine cutoff, or ECO, sensors inside the liquid hydrogen section of the tank gave a false reading and NASA's current Launch Commit Criteria require that all four sensors function properly. The sensor system is one of several that protect the shuttle's main engines by triggering their shut down if fuel runs unexpectedly low. Space shuttle Atlantis' STS-122 mission now is targeted to launch no earlier than Jan. 2. The liftoff date depends on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3606

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at N...

KENNEDY SPACE CENTER, FLA. -- On the Shuttle Landing Facility at NASA's Kennedy Space Center, STS-122 Mission Specialist Leland Melvin heads for the plane for the return trip to Houston. The crew is flying... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system. The test wiring leads to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3625

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system into the tail mast. The test wiring leads from the tail mast to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3628

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system into the tail m... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician prepares a cable from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system leading into the tail mast. The test wiring leads from the tail mast to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3629

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician prepar...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician prepares a cable from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, syst... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians identify an area on space shuttle Atlantis' external tank that might be cut out if tests prove the need to get to the pass-through wiring associated with the engine cut-off, or ECO, sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3634

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians identif...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians identify an area on space shuttle Atlantis' external tank that might be cut out if tests prove the need to get to the pass-through wiring associate... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system into the tail mast. The test wiring leads from the tail mast to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3627

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, cables lead from an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system into the tail m... More

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identifying the signature of a cryogenic environment and calibrating the TDR equipment. The equipment will be used at the launch pad to test a procedure identical to a tanking test on space shuttle Atlantis' external tank planned for Dec. 18. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the engine cut-off, or ECO, sensor system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3643

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at ...

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identi... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system. The test wiring leads to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3623

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks cables and wires that will be used in the Time Domain Reflectometry, or TDR, test on engine cut-off sensors, or ECO, in space shuttle Atlantis' external tank. The test equipment -- blue monitor at left-- will be used to validate the circuit on the test wiring before hooking it up to the test box. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3630

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks cables and wires that will be used in the Time Domain Reflectometry, or TDR, test on engine cut-off sensors, or ECO, in space shuttle Atlan... More

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis' external tank and solid rocket boosters will be the subject of a tanking test with the Time Domain Reflectometry, or TDR, test equipment whose wiring is being calibrated Dec. 14. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3633

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis' external tank ...

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis' external tank and solid rocket boosters will be the subject of a tanking test with the Time Domain Reflectometry, or TDR, test equipment whose wiring is b... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or ECO, system. The test wiring leads to the interior of the mobile launcher platform where the Time Domain Reflectometry, or TDR, test equipment will be located to test the sensor system. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3624

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, a technician checks test wiring spliced into an electrical harness in space shuttle Atlantis' aft main engine compartment connected with the engine cut-off, or... More

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, technicians monitor readings during a test exposing Time Domain Reflectometry, or TDR, instrumentation to "wet" super-cold temperatures for identifying the signature of a cryogenic environment and calibrating the TDR equipment. The equipment will be used at the launch pad to test a procedure identical to a tanking test on space shuttle Atlantis' external tank planned for Dec. 18. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the engine cut-off, or ECO, sensor system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3642

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at ...

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, technicians monitor readings during a test exposing Time Domain Reflectometry, or TDR, instrumentation to "wet"... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians point to an area of space shuttle Atlantis' external tank where the engine cut-off, or ECO, sensors are located. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the ECO system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3626

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians point t...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, technicians point to an area of space shuttle Atlantis' external tank where the engine cut-off, or ECO, sensors are located. The shuttle's planned launches o... More

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identifying the signature of a cryogenic environment and calibrating the TDR equipment. The equipment will be used at the launch pad to test a procedure identical to a tanking test on space shuttle Atlantis' external tank planned for Dec. 18. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the engine cut-off, or ECO, sensor system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3641

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at ...

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identi... More

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identifying the signature of a cryogenic environment and calibrating the TDR equipment. The equipment will be used at the launch pad to test a procedure identical to a tanking test on space shuttle Atlantis' external tank planned for Dec. 18. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the engine cut-off, or ECO, sensor system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3639

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility a...

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for iden... More

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identifying the signature of a cryogenic environment and calibrating the TDR equipment. The equipment will be used at the launch pad to test a procedure identical to a tanking test on space shuttle Atlantis' external tank planned for Dec. 18. The shuttle's planned launches on Dec. 6 and Dec. 9 were postponed because of false readings from the part of the engine cut-off, or ECO, sensor system that monitors the liquid hydrogen section of the tank. The liftoff date from NASA's Kennedy Space Center, Florida, is now targeted for Jan. 10, depending on the resolution of the problem in the fuel sensor system. Photo credit: NASA/Kim Shiflett KSC-07pd3640

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at ...

KENNEDY SPACE CENTER, FLA. -- In the cryogenic test bed facility at NASA's Kennedy Space Center, Time Domain Reflectometry, or TDR, instrumentation is being exposed to "wet" super-cold temperatures for identi... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3650

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test ... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician sets up wiring for the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3644

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy S...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician sets up wiring for the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a wiring board has been set up for the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3645

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy ...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a wiring board has been set up for the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring ... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3649

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test ... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3651

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test ... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician checks the blue monitor that will be used to validate the circuit on test wiring during the tanking test on space shuttle Atlantis' external tank. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3646

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician checks the blue monitor that will be used to validate the circuit on test wiring during the tanking test on space s... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3648

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy S...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The tes... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test wiring has been spliced into an electrical harness in the aft main engine compartment connected with the engine cut-off, or ECO, sensor system. The attached wiring leads to the interior of the mobile launcher platform where the time domain reflectometry, or TDR, test equipment is located. Photo credit: NASA/Kim Shiflett KSC-07pd3647

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy S...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, the wiring is checked and validated before the tanking test on space shuttle Atlantis' external tank set for Dec. 18. The test... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission. The covers will be removed for access to the feed-through connectors. Following the failure of some of the tank's engine cutoff sensors, or ECO sensors, during propellant tanking for launch attempts on Dec. 6 and Dec. 9, a tanking test was conducted on Dec. 18 to aid in troubleshooting the cause. Technicians spliced test wiring into the ECO sensor electrical system and used time domain reflectometry equipment to help locate the electrical anomaly. Results of the tanking test pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. During the holiday period, workers from Lockheed Martin will begin inspecting and testing the connector. Shuttle program managers will meet on Dec. 27 to review the test and analysis, and decide on a forward plan. Photo credit: NASA/Kim Shiflett KSC-07pd3652

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Allian...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for sp... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission, revealing the fastener holes on the covers. The covers will be removed for access to the feed-through connectors. Following the failure of some of the tank's engine cutoff sensors, or ECO sensors, during propellant tanking for launch attempts on Dec. 6 and Dec. 9, a tanking test was conducted on Dec. 18 to aid in troubleshooting the cause. Technicians spliced test wiring into the ECO sensor electrical system and used time domain reflectometry equipment to help locate the electrical anomaly. Results of the tanking test pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. During the holiday period, workers from Lockheed Martin will begin inspecting and testing the connector. Shuttle program managers will meet on Dec. 27 to review the test and analysis, and decide on a forward plan. Photo credit: NASA/Kim Shiflett KSC-07pd3655

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Allian...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for sp... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, the foam insulation surrounding the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission is carefully cut away by a United Space Alliance technician. The covers will be removed for access to the feed-through connectors. Following the failure of some of the tank's engine cutoff sensors, or ECO sensors, during propellant tanking for launch attempts on Dec. 6 and Dec. 9, a tanking test was conducted on Dec. 18 to aid in troubleshooting the cause. Technicians spliced test wiring into the ECO sensor electrical system and used time domain reflectometry equipment to help locate the electrical anomaly. Results of the tanking test pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. During the holiday period, workers from Lockheed Martin will begin inspecting and testing the connector. Shuttle program managers will meet on Dec. 27 to review the test and analysis, and decide on a forward plan. Photo credit: NASA/Kim Shiflett KSC-07pd3653

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, the foam insulation s...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, the foam insulation surrounding the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission is carefully cut ... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for space shuttle Atlantis' STS-122 mission, revealing the fastener holes on the covers. The covers will be removed for access to the feed-through connectors. Following the failure of some of the tank's engine cutoff sensors, or ECO sensors, during propellant tanking for launch attempts on Dec. 6 and Dec. 9, a tanking test was conducted on Dec. 18 to aid in troubleshooting the cause. Technicians spliced test wiring into the ECO sensor electrical system and used time domain reflectometry equipment to help locate the electrical anomaly. Results of the tanking test pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. During the holiday period, workers from Lockheed Martin will begin inspecting and testing the connector. Shuttle program managers will meet on Dec. 27 to review the test and analysis, and decide on a forward plan. Photo credit: NASA/Kim Shiflett KSC-07pd3654

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Allian...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a United Space Alliance technician carefully cuts away the foam insulation surrounding the covers over the feed-through connector box on the external tank for sp... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician removes a pair of support brackets. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3658

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician gives the connector a cleaning, removing any residual foam insulation, and begins disconnecting the connector assembly. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3659

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, technicians set up equipment that will be used to take X-rays of the connector cable. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3661

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician pulls the connector assembly, with its associated electrical harness, away from the tank. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3660

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician cuts the external connector cable. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3657

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, technicians wrap the connector for transport to NASA's Marshall Space Flight Center in Huntsville, Ala., for further cryogenic testing. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3665

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, technicians wrap the connector for transport to NASA's Marshall Space Flight Center in Huntsville, Ala., for further cryogenic testing. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3666

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician disconnects the connector before it is demated from the external tank. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3662

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician inspects the connector just removed from the external tank. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3664

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician carries the shipping container in which the wrapped connector is secured for transport to NASA's Marshall Space Flight Center in Huntsville, Ala., for further cryogenic testing. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3668

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, technicians place the wrapped connector in a shipping container for transport to NASA's Marshall Space Flight Center in Huntsville, Ala., for further cryogenic testing. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3667

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in support of space shuttle Atlantis' STS-122 mission. Here, a technician demates the connector from the external tank. Some of the tank's engine cutoff sensors, or ECO sensors, failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the data from additional testing on the connector is analyzed, shuttle program managers will decide on a forward plan. Launch of STS-122 is targeted for January 2008. Photo credit: NASA/George Shelton KSC-07pd3663

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external ta...

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a team of external tank specialists from Lockheed Martin and the United Space Alliance undertakes the task of removing the hydrogen feed-through connector in sup... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, solders a pin to the socket of the replacement feed-through connector that will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. The technician performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994 and was specifically chosen for the task. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0006

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, solders a pin to the socket of the replacement feed-through connector tha... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, the first two of nine pins have been soldered to the socket of the replacement feed-through connector that will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. Two United Launch Alliance technicians, who performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994, will be doing the soldering. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0008

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, the first two of nine pins have been soldered to the socket of the replacement feed-through connector that will be installed in the externa... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, examinies the pins remaining to be soldered to the socket of the replacement feed-through connector that will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. The technician performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994 and was specifically chosen for the task. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0009

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, examinies the pins remaining to be soldered to the socket of the replacem... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, a Lockheed Martin technician prepares an electrical wiring harness during a procedure to solder the pins to the socket of the replacement feed-through connector that will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. Two United Launch Alliance technicians, who performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994, will be doing the soldering. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0001

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, a Lockheed Martin technician prepares an electrical wiring harness during a procedure to solder the pins to the socket of the replacement f... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, inserts a wire from an electrical harness onto the pin of a replacement feed-through connector during preparations to solder the pins to the socket of the connector. The connector will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. The technician performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994 and was specifically chosen for the task. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0005

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Bob Arp, an aerospace technician with the United Launch Alliance, inserts a wire from an electrical harness onto the pin of a replacement f... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Kevin Wyckoff, an aerospace technician with the United Launch Alliance, examines an electrical wiring harness. The harness will be inserted into a replacement feed-through connector during preparations to solder the pins to the socket of the connector. The connector will later be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. The technician performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994 and was specifically chosen for the task. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0002

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, Kevin Wyckoff, an aerospace technician with the United Launch Alliance, examines an electrical wiring harness. The harness will be inserte... More

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, aerospace technicians with the United Launch Alliance inspect an electrical wiring harness that has been inserted into a replacement feed-through connector during preparations to solder the pins to the socket of the connector that will be installed in the external fuel tank for space shuttle Atlantis' STS-122 mission. The technicians performed this exacting task on the Centaur upper stage for Atlas and Titan launches in 1994 and were specifically chosen for the task. Soldering the connector pins and sockets together addresses the most likely cause of a problem in the engine cutoff sensor system, or ECO system. Some of the tank's ECO sensors failed during propellant tanking for launch attempts on Dec. 6 and Dec. 9. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The feed-through connector passes the wires from the inside of the tank to the outside. After the soldering is completed and the connector is reinstalled, shuttle program managers will decide on how to proceed. The launch date for mission STS-122 is under review. Photo credit: NASA/Kim Shiflett KSC-08pd0004

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center,...

KENNEDY SPACE CENTER, FLA. -- At a lab at NASA's Kennedy Space Center, aerospace technicians with the United Launch Alliance inspect an electrical wiring harness that has been inserted into a replacement feed-t... More

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