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Location : Wasted Space Job/hobbies : Cayman Islands Actuary
| Subject: Microbe find spurs new ideas about alien life Fri Dec 03, 2010 1:02 am | |
| ET HAS not called home yet, but the possibilities of what alien life could be like have expanded with the discovery of a bacterium that can survive on deadly arsenic.
The "peculiar" life form was found on Earth, in Mono Lake in California, which is extremely salty and has high natural levels of arsenic.
Phosphorus had been thought to be essential for life. So the existence of a microbe that can substitute the legendary poison arsenic for it raises the prospect of life existing on hostile planets without phosphorus.
In 2001, NASA released this artist's impression of a planet orbiting the Sun-like star HD 209458, 150 light years from Earth, which could potentially host alien life. Tomorrow, NASA will make an announcement concerning the search for extraterrestrials.
Felisa Wolfe-Simon, a NASA astrobiology research fellow, said her team's find showed life was more flexible than imagined.
"If something here on Earth can do something so unexpected, what else can life do that we haven't seen yet?" said Dr Wolfe-Simon, of the US Geological Survey.
ANCAPS: ANARCHO-CAPITALISTS |
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