Search for Alien Empires Proves Fruitless
But they’ll keep looking. Scientists at Penn State have scanned 100,000 galaxies for radiation, a byproduct they believe would be produced by any alien civilizations advanced enough to colonize other worlds. This idea has been around since the 1960s, but now telescopes are advanced enough that researchers for the G-HAT (Glimpsing Heat from Alien Technologies) survey can scan the sky for telltale signs of life. They haven’t found alien realms yet, but the team says 50 galaxies did have odd radiation patterns that warrant further study.