First contact or false alarm? New Richter-like scale for alien signals

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FOLLOWING ON FROM OUR DISCUSSION AT THE LAST ASTRONOMY GROUP MEETING………………..

First contact or false alarm? New Richter-like scale for alien signals

Rio 2.0 rates potential signs of extraterrestrial life from 0 to 10, with 10 equivalent to ‘an alien shaking your hand’
[img]https://i.guim.co.uk/img/media/a919739be8c5d11b5f389465269f22036c1bf9ce/0_163_4680_2808/master/4680.jpg?w=620&q=55&auto=format&usm=12&fit=max&s=e8b098cc0fe77e9302f35c8df2d76c32[/img]
Alien seeker … Jodie Foster as Ellie Arroway in the 1997 movie Contact, based on Carl Sagan’s novel. Photograph: Rex/Shutterstock

When a team of Russian astronomers reported in 2015 that a telescope in the Caucasus region had intercepted a mysterious signal from a distant star, talk of extraterrestrials was not far behind. As some asked: was this proof aliens were trying to contact us?

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