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发帖数: 298 | 1 March 14, 2002 | Ever since it was trumpeted at a hastily convened press
conference in August 1996, the subject of possible signs of life in the Martian
meteorite ALH 84001 has remained intensely controversial. At the time, David
S. McKay (NASA/Johnson Space Center) and his coauthors presented four lines
of evidence suggesting that the 4-billion-year-old meteorite contains chemical
or fossil traces of microbial life. In the years since, however, these signs
have been disputed by other researcher |
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