Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
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.
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
Portrait of the solar system : paper outline
A rough outline of an essay by Carolyn Porco on the "drama, historic significance, and scientific importance of the Voyager mission."
Martian water : student paper draft
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Letter to Neil Tyson - Public domain document scan
Carl Sagan congratulates Neil deGrasse Tyson on being admitted to Harvard and asks him to keep him posted about his progress in school.
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
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.
Portrait of the solar system : paper outline
A rough outline of an essay by Carolyn Porco on the "drama, historic significance, and scientific importance of the Voyager mission."
Letter to David Grinspoon - Public domain document scan
Carl Sagan writes to David Grinspoon, then an undergraduate student at Brown University asking if he could help Sagan find a copy of a book containing seventeen articles on astronomy by science fiction author H... More
Letter from Neil Tyson with enclosures
Neil deGrasse Tyson writes to Carl Sagan for recommendations for an agent or publisher he might contact about turning a series of Q & A pieces he wrote for Star date the astronomy news report into an illustrate... More
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
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 Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
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
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Physics 111, University of Hawaii : related materials
A copy of a memo sent by David Morrison to John Holmes, Jack Zirker, and the astronomy teaching faculty at the University of Hawaii which Morrison forwarded to Carl Sagan. Morrison reflects on successes in this... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Draft of letter to Gerard Kuiper
Draft of a letter in which Carl Sagan accepts an offer from Gerard Kuiper to study Mars from the McDonald Observatory in the summer of 1956.
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 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 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.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Martian water : student paper draft
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Letter to Neil Tyson - Public domain document scan
Carl Sagan writes to Neil deGrasse Tyson, then a senior at The Bronx High School of Science in New York City. Sagan suggests that given Tyson's resume he could engage in real astronomical research as an undergr... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to Carl Sagan about his first year as an undergraduate student at Harvard University.
Recommendation for the promotion of Carolyn Porco to full professor at...
In this letter, Carl Sagan supports Carolyn Porco's case for promotion to full professor at the University of Arizona. Sagan focuses on the important role Porco played on the Cassini Imaging Science Team.
Physics 111, University of Hawaii : related materials
A copy of a memo sent by David Morrison to John Holmes, Jack Zirker, and the astronomy teaching faculty at the University of Hawaii which Morrison forwarded to Carl Sagan. Morrison reflects on successes in this... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
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 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 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.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Martian water : student paper draft
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Physics 111, University of Hawaii : related materials
A copy of a memo sent by David Morrison to John Holmes, Jack Zirker, and the astronomy teaching faculty at the University of Hawaii which Morrison forwarded to Carl Sagan. Morrison reflects on successes in this... More
Physics 111, University of Hawaii : related materials
A copy of a memo sent by David Morrison to John Holmes, Jack Zirker, and the astronomy teaching faculty at the University of Hawaii which Morrison forwarded to Carl Sagan. Morrison reflects on successes in this... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
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 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 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 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.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
Letter of recommendation for David Morison
Carl Sagan offers this letter of recommendation supporting David Morission's membership in the International Astronomical Union. Sagan stresses Morrison's talents at both radio and infrared astronomy.
Letter of recommendation for David Morison
Carl Sagan offers this letter of recommendation supporting David Morission's membership in the International Astronomical Union. Sagan stresses Morrison's talents at both radio and infrared astronomy.
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Physics 111, University of Hawaii : related materials
A copy of a memo sent by David Morrison to John Holmes, Jack Zirker, and the astronomy teaching faculty at the University of Hawaii which Morrison forwarded to Carl Sagan. Morrison reflects on successes in this... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter to David Morrison - Public domain document scan
Carl Sagan thanks David Morrison for sending information about Physics 111, the introductory special topics course in astronomy David Morrison taught at the University of Hawaii.
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Carl Sagan - Dear Colleague letter
A letter written by David Morrison, then a staff scientist with the Earth and Planetary Exploration Division of the Office of Space Science and Applications at NASA with updates related to ongoing NASA work in ... More
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter to David Grinspoon - Public domain document scan
Carl Sagan thanks David Grinspoon, then an undergraduate student at Brown University, for sending a book of science fiction author H.P. Lovecraft's writings on astronomy. Sagan then invites Grinspoon apply for ... More
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.
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
A student paper by David Morrison focused on determining the quantity of free water on 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.
Letter of recommendation for David Morrison
Carl Sagan recommends Morrison, then a graduate student he was advising, as someone who can tackle astronomical research problems of significance.
Letter from Neil Tyson - Public domain document scan
Neil deGrasse Tyson writes to thank Carl Sagan for his suggestions for two literary agents he could contact regarding his book tentatively titled Merlin's tour of the universe, published in 1989.
Letter to Neil Tyson - Public domain document scan
Carl Sagan writes back to Neil deGrasse Tyson thanking him for copies of draft material for Tyson's book Merlin's tour of the universe, for which Tyson is seeking out a publisher. Sagan complements and congratu... More
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.
Letter from Neil Tyson with enclosures
Neil deGrasse Tyson writes to Carl Sagan for recommendations for an agent or publisher he might contact about turning a series of Q & A pieces he wrote for Star date the astronomy news report into an illustrate... More
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 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
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
A student paper by David Morrison focused on determining the quantity of free water on Mars.