When people hear “Dyson sphere,” their first thought is probably a heavy-duty vacuum. They certainly don’t think of a megastructure surrounding and harnessing a star’s energy with the purpose of fueling a highly advanced extraterrestrial civilization.
But that’s exactly what it is, at least in theory.
Now, some scientists believe they might have found not one, but seven in the Milky Way. Project Hephaistos, named after the Greek god of fire and metalworking, published research on May 6 claiming they may have found seven red dwarf stars surrounded by Dyson spheres in our galaxy.
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