Scan of 100K galaxies finds no 'super-civilizations'

April 20, 2015 3:55 PM

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Scan of 100K galaxies finds no 'super-civilizations'

Super-civilizations that conquer entire galaxies may only exist in science fiction, a new study suggests. In the scale of possible civilizations proposed by Russian astronomer Nikolai Kardashev, highly advanced Type III civilizations are capable of harnessing the whole power of a galaxy, but a survey of the most promising 100,000 galaxies found no sign of the heat in mid-infrared wavelengths such incredible power would produce.

"These galaxies are billions of years old, which should have been plenty of time for them to have been filled with alien civilizations, if they exist," the lead researcher from Penn State's Center for Exoplanets and Habitable Worlds says in a press release.

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