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Nannobacteria In Space To many people, the most convincing aspect of NASA's "life on Mars" announcement (McKay et al., 1996) was the SEMs of Martian"nannobacteria." This section shows examples of nm-scale features we've found in Allende and Murchison carbonaceous chondrite meteorites that strongly resemble purported Martian and Earthly nannos. Unlike ALH840001, which was entombed in Antarctic ice for over 10,000 years, both Allende and Murchison were collected within several days of their arrival here on Earth, so the potential for contamination is much less. Are these little features evidence of life in outer space? You be the judge, but remember
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