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Looks Like We’re Still Looking for Earthly Life Forms on Other Planets
GFAJ-1, the bacterium found in California's Lake Mono. Image credit: Science/AAAS
In late 2010, NASA set the internet buzzing when it called a press conference to discuss an astrobiological finding that would impact the search for extraterrestrial life. Many speculated that some primitive life had been found on Mars or one of Saturn’s moons. But the evidence was found on Earth; a strain of bacteria in California’s Lake Mono that had arsenic in its genetic structure. The discovery implied that life could thrive without the elements NASA typically looks for, mainly carbon and phosphorous. But now, a new study challenges the existence of arsenic-based life forms. (…)
Read the rest of Looks Like We’re Still Looking for Earthly Life Forms on Other Planets (519 words)
© Amy Shira Teitel for Universe Today, 2012. | Permalink | No comment | Add to del.icio.us
Post tags: Astrobiology
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