Mathematics – Logic
Scientific paper
Nov 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976asaer..14...22m&link_type=abstract
Astronautics and Aeronautics, vol. 14, Nov. 1976, p. 22-42, 44-48.
Mathematics
Logic
1
Mars Surface, Planetary Composition, Space Exploration, Viking Mars Program, Mars Atmosphere, Mission Planning, Planetary Meteorology, Viking Lander Spacecraft, Viking Orbiter Spacecraft
Scientific paper
The Viking spacecraft, operations, and findings are reviewed and numerous pictures are presented in an attempt to capture the atmosphere of the Viking expedition. The details of the two Viking spacecraft, each consisting of an orbiter and lander combination launched a Titan III/Centaur are described and illustrated, along with the Viking ground-data and communications system. The principal conclusions of the Viking mission to date are: detection of nitrogen, argon, krypton, and xenon; determination of isotopic ratios of carbon, nitrogen, oxygen, and argon; uniform diurnal meteorological conditions; determination of major elemental abundances; complex surface chemistry; no ubiquitous organic material; 4 to 7% of the sampled surface material is magnetic; discovery of ancient extensive fluvial activity; north permanent polar cap made of water ice; and significant variations of the atmospheric water vapor, the summer hemisphere being much more humid than the winter hemisphere.
Martin Jaime San
Young Thomas A.
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