Planet Earth

planetology

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30 calibabor Vertical Gun Range in horizontal loading position. Dr. William Quaide and Donald Gault of Ames planetology branch used this gun range to study the formation of impact craters on the Moon. N-204A Verticle Gun is used to simulate the physics and mechanics of planetaryimpact cratering phenomena. ARC-1965-A-33996

30 calibabor Vertical Gun Range in horizontal loading position. Dr. Wi...

30 calibabor Vertical Gun Range in horizontal loading position. Dr. William Quaide and Donald Gault of Ames planetology branch used this gun range to study the formation of impact craters on the Moon. N-204A Ve... More

Letter From David Grinspoon
Letter of recommendation for David Grinspoon, to Dr. Alex Woronow

Letter of recommendation for David Grinspoon, to Dr. Alex Woronow

Carl Sagan recommends David Grinspoon for the graduate program in planetary sciences at the University of Arizona. Sagan reflects on Grinspoon's work as an assistant to the Voyager Imaging Team.

Letter to Larry Esposito, recommending David Grinspoon for a tenure track faculty position

Letter to Larry Esposito, recommending David Grinspoon for a tenure tr...

Carl Sagan unreservedly recommends David Grinspoon for a tenure-track position at the University of Colorado at Boulder.

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

Draft of Harold Clayton Urey obituary for Icarus

Draft of Harold Clayton Urey obituary for Icarus

Draft of obituary written by Sagan for one of his mentor's Harold Clayton Urey. Sagan discusses Urey's contributions to the field of planetary science and recounts how he met Urey while he was a student at the ... More

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for study at Harvard University. In the document, Morrison outlines the state of his work on the thermal properties of Mercury and the atmosphere of Mars.

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for study at Harvard University. In the document, Morrison outlines the state of his work on the thermal properties of Mercury and the atmosphere of Mars.

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for study at Harvard University. In the document, Morrison outlines the state of his work on the thermal properties of Mercury and the atmosphere of Mars.

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for his study of Mars and Mercury

David Morrison's plan for study at Harvard University. In the document, Morrison outlines the state of his work on the thermal properties of Mercury and the atmosphere of Mars.

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Revision of scientific objectives for participation in the Voyager mission

Revision of scientific objectives for participation in the Voyager mis...

A set of revisions to the scientific objectives of the Voyager mission prepared at the request of Bradford Smith, head of the Voyager Project's photo-imagery team. The brief document mentions a series of primar... More

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Martian water : student paper draft

Martian water : student paper draft

A student paper by David Morrison focused on determining the quantity of free water on Mars.

Letter to David Grinspoon

Letter to David Grinspoon

Carl Sagan offers detailed feedback to David Grinspoon on drafts of three chapters of Grinspoon's doctoral thesis in planetary sciences from the University of Arizona. Sagan provides a mixture of copy editing s... More

Letter to David Grinspoon

Letter to David Grinspoon

Carl Sagan offers detailed feedback to David Grinspoon on drafts of three chapters of Grinspoon's doctoral thesis in planetary sciences from the University of Arizona. Sagan provides a mixture of copy editing s... More

Letter to David Grinspoon

Letter to David Grinspoon

Carl Sagan offers detailed feedback to David Grinspoon on drafts of three chapters of Grinspoon's doctoral thesis in planetary sciences from the University of Arizona. Sagan provides a mixture of copy editing s... More

Letter to David Grinspoon

Letter to David Grinspoon

Carl Sagan offers detailed feedback to David Grinspoon on drafts of three chapters of Grinspoon's doctoral thesis in planetary sciences from the University of Arizona. Sagan provides a mixture of copy editing s... More

Outline for a project studying Mars

Outline for a project studying Mars

A short outline of a project exploring surface temperatures, the polar ice caps, and the atmosphere of Mars that David Morrison created while a graduate student at Harvard University.

Outline for a project studying Mars

Outline for a project studying Mars

A short outline of a project exploring surface temperatures, the polar ice caps, and the atmosphere of Mars that David Morrison created while a graduate student at Harvard University.

Outline for a project studying Mars

Outline for a project studying Mars

A short outline of a project exploring surface temperatures, the polar ice caps, and the atmosphere of Mars that David Morrison created while a graduate student at Harvard University.

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Draft of obituary for Gerard Kuiper

Draft of obituary for Gerard Kuiper

A draft of an obituary Carl Sagan wrote for Gerard Kuiper for Icarus, a journal focusing on solar system studies which Carl Sagan was editor. The draft presents an overview of Kuiper's accomplishments and a rev... More

Letter from David Morrison to Carl Sagan

Letter from David Morrison to Carl Sagan

David Morrison invites Carl Sagan to participate in a NASA-sponsored workshop on the Saturn and its rings, moon Titan and other satellites. Morrison focuses particularly on questions that will remain after the ... More

Letter from David Morrison to Carl Sagan

Letter from David Morrison to Carl Sagan

David Morrison invites Carl Sagan to participate in a NASA-sponsored workshop on the Saturn and its rings, moon Titan and other satellites. Morrison focuses particularly on questions that will remain after the ... More

Letter from David Morrison to Carl Sagan

Letter from David Morrison to Carl Sagan

David Morrison invites Carl Sagan to participate in a NASA-sponsored workshop on the Saturn and its rings, moon Titan and other satellites. Morrison focuses particularly on questions that will remain after the ... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

Venus surface temperatures : draft : notebook

Venus surface temperatures : draft : notebook

Handwritten draft of a paper on the surface temperatures of Venus written in a notebook. Three primary sections focus on heat conduction in a semi infinite solid, the thermal properties of matter, and plane ele... More

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