Computer Science
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982avwst.117...18c&link_type=abstract
Aviation Week and Space Technology, vol. 117, Nov. 29, 1982, p. 18-21.
Computer Science
Gas Analysis, Mars Photographs, Mars Surface Samples, Meteoritic Composition, Viking Orbiter Spacecraft, Atmospheric Composition, Escape Velocity, Gas Composition, Gas Explosions
Scientific paper
Evidence for the Martian origin of a meteorite discovered in Antarctica is discussed. Using Viking orbiter photographs of Mars, candidate craters on the Martian surface from which the rock, designated EETA 79001, may have originated have been identified. Analyses have indicated that large bodies striking Mars at a velocity of about 6.2 mi/sec could propel impact ejecta at a velocity of about 4.9 mi/sec, which is greater than the 3.1 mi/sec velocity needed for escape of Martian gravity. The propulsion of such debris is thought to be due to volatiles, such as permafrost, beneath the Martian surface which could be vaporized on impact, providing a gas explosion that would accelerate the ejecta to escape velocity. The meteorite is in perfect condition, and sufficiently large to permit many years of study.
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