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The First Alien Civilization We Encounter Will Be Extremely Loud

The First Alien Civilization We Encounter Will Be Extremely Loud
By Evan Gough (https://ift.tt/4y5ilqX)

An artist's illustration of an alien technological civilization on a distant planet. The colours are exaggerated to show growing atmospheric pollution. Image Credit: NASA/Jay Freidlander

When we gaze up at the night sky, we assume that what we're seeing is a representative population of similar stars at similar distances. But it's not. The stars we see are a mixture of massive and small, distant and near. In fact, we can't even see our closest neighbour, Proxima Centauri. We see these stars because they have large observational signals, and that illustrates one of the problems in astronomy.



December 17, 2025 at 03:49AM
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