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Earth-like alien world discovered

I think Proxima Centari is the closest star but it's in the same system as Alpha Centari.

Just drop me off at Barnard Star.
 
8ball said:
Yeah, plenty of orbits in which you could put some long-range monitoring equipment with little to no chance of us spotting it with our current kit.
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Or, if they have the technology to get here in the first place there is the possibility they have proper stealth technology that would render them undetectable to our relatively rubbish technology.
 
Was it Douglas Adams who suggested we could have a human scale view of potential aliens when in fact they could be humungous or absolutely tiny. Wasn't there a sketch in Hitchiker's guide about it?
 
farmerbarleymow said:
Or, if they have the technology to get here in the first place there is the possibility they have proper stealth technology that would render them undetectable to our relatively rubbish technology.
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AFAIK if you've got proper stealth technology in space, you're badly violating laws of thermodynamics. That heat has to go somewhere. A massive radiator might show up.
 
xenon said:
AFAIK if you've got proper stealth technology in space, you're badly violating laws of thermodynamics. That heat has to go somewhere. A massive radiator might show up.
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As the saying goes - any technology, sufficiently advanced, is indistinguishable from magic.
 
Seems like the most unlikely moment in the emergence of life is moving beyond the bacterial level. It may be comparatively easy to get the emergence of simple life.
 
weltweit said:
Bloomin eck... are you sure 2hats? that is a long old time!
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Voyager 1 is cruising around 17km/s. Lowest figure for distance to Kepler-186 is 4.1*10^15km => ((4.1/17)*10^15)/3600/24/365 ~ 7.5 MYrs. Though I don't know (can't find) the radial velocity of Kepler-186 which could obviously make a big difference.

I think you were looking for 12m10s into this H2G2 clip:
 
8ball said:
Basically, no one knows either way and there are no inputs to put into any kind of probability calculation.

The fact that none of them have made contact so far is a point in favour of intelligent life, though.
Anything intelligent is going to give us a wide berth for a while yet.
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Probability is for losers.
 
weltweit said:
Rather than having to find suitable planets to populate in goldilocks zones, we will eventually be able to create our own manmade environments suitable for travel through space and supporting millions or even billions of humans and plants and other creatures. In the future, things will be different!
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Without wanting to appear too harsh, that is quite a prediction from someone who wasn't aware how fast radio waves travel ;)
 
But we can't rely on science to predict the future. The short term horizon for sure, but after that anything is possible and being restricted by the rules of today is like saying travelling over 5mph would cause death!
 
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