Author
United States. National Aeronautics and Space Administration
24
NetLibrary, Inc
14
National Academy of Sciences (U.S.)
12
National Research Council (U.S.). Space Science Board
12
Morgan, Daniel
6
United States. Government Accountability Office,
6
Burgess, Colin, 1947-
5
Wilkins, John, 1614-1672
5
Heat Moon, William Least
4
North, Gerald
4
Chaikin, Andrew, 1956-
3
Coers, Donald V., 1941-
3
Dupont-Bloch, Nicolas, 1963-
3
Godwin, Robert, 1958-
3
Google (Firm)
3
Langley Research Center
3
Lin, Grace
3
Locke, Richard Adams, 1800-1871
3
National Research Council (U.S.). Committee on Planetary and Lunar Exploration
3
Price, John, 1966-
3
Roberts, Paul
3
United States. Congress. House. Committee on Science, Space, and Technology (2011- ). Subcommittee on Space and Aeronautics,
3
United States. National Archives and Records Administration
3
United States. National Park Service,
3
Whipple, Fred Lawrence, 1906-
3
Abela, Alexander, 1965-
2
Aldrin, Buzz
2
Alter, Dinsmore, 1888-1968
2
Bennington, J. Bret, 1963-
2
Brunner, Bernd, 1964-
2
Byrne, Charles J., 1935-
2
Cadbury, Deborah,
2
Causey, William F., 1949-
2
Doolan, Kate, 1962-
2
Dunton-Downer, John,
2
Farrow, Nick
2
Fielder, Gilbert
2
French, Francis
2
Galloway, Eilene Marie Slack, 1906-
2
Grenon, Valérie,
2
Gutjahr, Paul C.,
2
Hapke, Bruce,
2
Heintz, Kurt,
2
Henkes, Kevin
2
Hill, Rodney F.,
2
Hughes, Edward Dudley, 1968-
2
JSTOR (Organization)
2
Joyce, William, 1957-
2
Kopal, Zdeněk, 1914-
2
Kosofsky, L. J.
2
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