NASA Refines Criteria for Life Signs on Exoplanets

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Michael Watson

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Message 1571520 - Posted: 13 Sep 2014, 16:47:22 UTC

NASA scientists have been running a large number of computer simulations of exoplanet atmospheres. They conclude that the detection of any one gas is inadequate to establish that life is present on a planet. Such single gases may be produced by non-living processes. A combination of certain gases, such as oxygen and methane, will be necessary to demonstrate that extraterrestrial life has been discovered. Details are given in the article, linked below:
http://phys.org/news/2014-09-nasa-guideline-future-alien-life.html
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Message 1597080 - Posted: 5 Nov 2014, 7:05:09 UTC - in response to Message 1571520.  

Read that one...but more importantly, they said that CFC would be great in detecting an alien civilization...'cause CFC don't occur naturally! ;)

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Message boards : SETI@home Science : NASA Refines Criteria for Life Signs on Exoplanets


 
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