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How easy is it for ET to observe the Earth ?


Posted on Saturday, 9 September, 2017 | Comment icon 5 comments

Could someone be watching us ? Image Credit: NASA
Astronomers have identified nine planets from which intelligent aliens could potentially be watching us.
While much work has been done over the years to look for signs of intelligent life out there in the cosmos, there has been little consideration of the possibility that someone might be watching us.

In a recent study, scientists from Belfast set out to determine where the best vantage points would be for an extraterrestrial civilization who wanted to observe what we were up to.

The research involved identifying the parts of the sky from which the planets in our solar system could be seen passing in front of the Sun from the perspective of a distant observer on another world.

It turned out that the rocky terrestrial planets such as the Earth and Mars would be the easiest to spot.

"Larger planets would naturally block out more light as they pass in front of their star," said Robert Wells from Queen's University Belfast. "However the more important factor is actually how close the planet is to its parent star. Since the terrestrial planets are much closer to the sun than the gas giants, they'll be more likely to be seen in transit."

The scientists ultimately detected 68 extrasolar planets from which at least some of the planets in our solar system could be observed and at least 9 that would be "ideally placed" for observing the Earth.

None of these planets however are currently believed to be habitable.

Source: Belfast Live | Comments (5)

Tags: Exoplanet, Extraterrestrial

Recent comments on this story
Comment icon #1 Posted by Hammerclaw on 9 September, 2017, 12:31
Interesting question, yet what would observers have seen, peering down at Earth from skies undreamed as the sun has changed position, relative to other stars in it's orbit of galactic center? For much of it's history a nonde little world, notable for it's massive moon, either frozen or awash with nary a sign of life save for the microscopic, perhaps catalogued  and forgotten. It strains credulity to think that now there is something to look out at other planets of other stars, that at the same point in time something is looking back. Of course, it is a possibility, predicated on the acceptance... [More]
Comment icon #2 Posted by Sundew on 9 September, 2017, 17:44
They must get a good laugh at the old alien sic-fi movies whose signals may have reached them.    If they have seen newsreels of WWII they have probably stamped our world "Quarantined: Off Limits!" or are planning to blow us up. 
Comment icon #3 Posted by ChaosRose on 9 September, 2017, 17:54
So long and thanks for all the fish...so sad that it should come to this...  
Comment icon #4 Posted by Boozemonkey on 9 September, 2017, 23:30
I've tried waving to them. But they're not waving back...
Comment icon #5 Posted by taniwha on 11 September, 2017, 0:40
Of course! Our old alien movies would be like a silent Charlie Chaplin comedy to them. Yes, even their sense of humour will be light years ahead of ours...


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