In 1996, NASA announced that it had found evidence of life contained in the Martian meteorite Alan Hills 84001 (McKay et al., 1996). They held press conferences and presented evidence for what they termed bacterial cell structures in the meteorites, along with some amino acid profiles. News spread like wildfire among Mars aficionados and sceptics alike. The search for life on Mars stimulated several lander and orbital missions to Mars. At the same time, NASA under the advice of Wesley T. Huntress, Associate Administrator for Space Science, had the idea to form the NASA Astrobiology Institute, a...

You do not currently have access to this article.