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Here's More Evidence That Galactic Super-Civilizations Don't Exist

Earlier this year, a scan of 100,000 galaxies showed no signs of alien mega-civilizations, dashing the hopes of those longing for a close encounter of the extra-terrestrial kind. A follow-up analysis of the data suggests it’s even worse than we thought, concluding that advanced galaxy-spanning civilizations don’t…

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What Are the Odds of an Alien Megastructure Blocking Light From a Distant Star?

A strange star located 1,500 light-years from Earth is exhibiting strange flickering behavior that’s leading some scientists to speculate that an alien megastructure is blocking the light. But what would such a structure be exactly and how likely is it that the Kepler space telescope has actually spotted one?