Why astronomers are so excited about a powerful signal in space they cannot explain
In 2015, Russian radio Telescope "Ratan-600" detected a strong signal from space. It's origins are from somewhere in the HD 16495 star system, 95 light years away. There are some theories about what could have generated such a powerful signal, and one of the ideas being thrown around is aliens. Could this be a signal from advanced extraterrestrials?
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