Manuscript/Mixed Material Letter to Steven Wall
About this Item
- Letter to Steven Wall
- Contributor Names
- Wall, Steven (Addressee)
- Sagan, Carl (Author)
- Subject Headings
- - Sagan, Carl
- - Extraterrestrial life
- - Life on other planets
- - Mars (Planet)
- - Outer space--Exploration
- - Viking Mars Program (U.S.)
- - NASA
- - National Aeronautics and Space Administration
- - Wall, Stephen D
- - Correspondence
- - Sagan explains he is concerned about the "somewhat remote" possibility that there might be nocturnal Martian organisms that the Viking Lander might not be able to capture in photographs taken in the dim light of Mars moon Phobos.
- Dimensions in inches: 11 x 8 1/2
- Source Collection
- The Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive
- Manuscript Division
- Online Format
- online text
Life on Other Planets
National Aeronautics and Space Administration
Viking Mars Program (U.S.)
Wall, Stephen D.
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The Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive is protected by copyright. Permission to use these materials must be obtained from Ann Druyan or her designee.
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For guidance about compiling full citations consult Citing Primary Sources.
Citations are generated automatically from bibliographic data as a convenience, and may not be complete or accurate.
Chicago citation style:
Wall, Steven, and Carl Sagan. Letter to Steven Wall. 1975. Manuscript/Mixed Material. Retrieved from the Library of Congress, https://www.loc.gov/item/cosmos000041/. (Accessed August 20, 2017.)
APA citation style:
Wall, S. & Sagan, C. (1975) Letter to Steven Wall. [Manuscript/Mixed Material] Retrieved from the Library of Congress, https://www.loc.gov/item/cosmos000041/.
MLA citation style:
Wall, Steven, and Carl Sagan. Letter to Steven Wall. 1975. Manuscript/Mixed Material. Retrieved from the Library of Congress, <https://www.loc.gov/item/cosmos000041/>.