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 Post subject: Re: SETI Thread
PostPosted: Tue Oct 31, 2017 9:46 pm 
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Is Life Most Likely Around Sun-like Stars?

https://arxiv.org/abs/1710.11134

Quote:
We consider the habitability of Earth-analogs around stars of different masses, which is regulated by the stellar lifetime, stellar wind-induced atmospheric erosion, and biologically active ultraviolet (UV) irradiance. By estimating the timescales associated with each of these items, we show that they collectively impose limits on the habitability of Earth-analogs. We conclude that planets orbiting most M-dwarfs are not likely to host life, and that the highest probability of complex biospheres is for planets around K- and G-type stars. Our analysis suggests that the current existence of life near the Sun is slightly unusual, but not significantly anomalous.

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 Post subject: Re: SETI Thread
PostPosted: Mon Nov 06, 2017 7:53 pm 
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Green Bank Observatory Embraces Its Alien-Hunting Future

https://www.wired.com/story/green-bank- ... ng-future/

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 Post subject: Re: SETI Thread
PostPosted: Wed Nov 08, 2017 7:19 pm 
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What Happens If China Makes First Contact?

https://www.theatlantic.com/magazine/ar ... ct/544131/

Quote:
As America has turned away from searching for extraterrestrial intelligence, China has built the world’s largest radio dish for precisely that purpose.


If China's going to use alien contact to best these United States of America, I'm going to call it cheating.

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 Post subject: Re: SETI Thread
PostPosted: Thu Nov 09, 2017 1:53 pm 
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How the Discovery of Alien Life Will Transform Our World

https://futurism.com/videos/alien-life-transform-world/

Video featuring Seth Shostak of the SETI Institute.

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 Post subject: Re: SETI Thread
PostPosted: Wed Nov 15, 2017 9:08 pm 
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How Big Would an 'Alien Megastructure' Have to Be?

https://www.space.com/38711-how-big-is- ... t=63057352

Quote:
But science-fiction fans want to know — if it was an alien structure, how big would it have to be to create the light-dimming scientists observed? KIC 8462852 is an F-type star, hotter than the sun and about 1,300 light-years away from Earth, where 1 light-year is about 5.9 trillion miles (9.5 trillion kilometers). However, that distance is an estimate, and the star could be as far away as 1,680 light-years and as close as 1,030. The star is about 1.43 times the sun's mass and 1.58 times its diameter — so it's about 1.37 million miles (2.2 million km) across. (To get an idea of how big that is, about the 455 United States, lengthwise, could fit inside this alien megastructure.)

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 Post subject: Re: SETI Thread
PostPosted: Thu Nov 16, 2017 11:21 am 
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Scientists Debate Signatures of Alien Life

https://www.quantamagazine.org/scientis ... -20160202/

Quote:
Searching for signs of life on faraway planets, astrobiologists must decide which telltale biosignature gases to target.

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 Post subject: Re: SETI Thread
PostPosted: Mon Nov 20, 2017 12:46 pm 
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Arecibo Message: When We Tried to Communicate with Aliens

http://www.topsecretwriters.com/2017/11 ... te-aliens/

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 Post subject: Re: SETI Thread
PostPosted: Mon Nov 20, 2017 6:24 pm 
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Exoplanet hunters rethink search for alien life

https://www.nature.com/news/exoplanet-h ... fe-1.23023

Quote:
Astronomers expand ideas of how chemistry and geology could affect chances for life on other worlds.

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