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Did the percieved chance of ET life in our galaxy go up?

Posted by: vecima - Thu Nov 19, 2009 7:01 pm
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Did the percieved chance of ET life in our galaxy go up? 
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Post Did the percieved chance of ET life in our galaxy go up?   Posted on: Thu Nov 19, 2009 7:01 pm
I did a quick search and didn't see this among the headlines, so here goes:

(from ScienceNews.org - Sun may not be a Goldilocks star)

This article is interesting in that it claims that orange dwarfs (or K-Type stars) are actually better candidates than Sol for harboring habitable, and possibly life supporting planets. They apparently give off less UV, flare less, and have a longer lifespan than Sol. Additionally, they make up 15% of the stars in the galaxy - that is they are more common than "Sun-like" stars.

Given that life can develop around a "Sun-like" star, does this mean that extra terrestrial life in our galaxy is more likely than we previously realized?

(edited: twice I referred to the Sun as "Earth" - what was I smoking?)


Last edited by vecima on Fri Nov 20, 2009 2:47 pm, edited 1 time in total.



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Post Re: Did the percieved chance of ET life in our galaxy go up?   Posted on: Fri Nov 20, 2009 3:37 am
Unless we need the Flares and UV to get biology done...

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Post Re: Did the percieved chance of ET life in our galaxy go up?   Posted on: Fri Nov 20, 2009 2:56 pm
I would think that they would be a mixed blessing at best. Who knows, maybe they did help with biological formation, but less of those things also means (if I understand correctly) less chance of the star blowing the atmosphere off of it's planets.


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Post Re: Did the percieved chance of ET life in our galaxy go up?   Posted on: Fri Nov 20, 2009 8:03 pm
Its a lack of data points...

We don't know what it takes, only that we have Life on Earth and that Earths geological history has been pretty freakish.

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Post Re: Did the percieved chance of ET life in our galaxy go up?   Posted on: Wed May 05, 2010 6:43 pm
The fact that Sol and these K-type stars are both thought (Sol proven) to harbor life increases the possibility to the best of our knowledge.


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