A new reason why we haven't heard from ET


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Michael Watson

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Message 1808891 - Posted: 13 Aug 2016, 15:03:02 UTC

Proxima Centauri is a flare star, with bursts of radiation that could be lethal to life on any planet there, especially complex life. A robust atmosphere might protect life from such flares, to a degree, but the flares could erode any atmosphere a planet might have, over time.

A substantial magnetic field could protect the atmosphere, but a planet in Proxima Centauri's habitable zone would be tidally locked. This makes a substantial magnetic field less likely, due to the planet's slow rotation.
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Profile William Rothamel
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Message 1809061 - Posted: 14 Aug 2016, 12:45:27 UTC - in response to Message 1808891.  

Alpha Centauri has several stars that are all near to us in cosmic terms.
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Profile Julie
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Message 1811000 - Posted: 21 Aug 2016, 12:00:57 UTC - in response to Message 1809061.  

Alpha Centauri has several stars that are all near to us in cosmic terms.


4 years travelling, at the speed of light.
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Message boards : SETI@home Science : A new reason why we haven't heard from ET


 
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