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A distant star flickers so strangely that scientists floated an alien-megastructure idea
In the constellation Cygnus, roughly 1,470 light-years from Earth, sits an otherwise unremarkable star that briefly became one of the most talked-about objects in the sky. Its brightness does not vary ...
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Why some still think aliens built the Giza Pyramids
The Giza Pyramids are among the best documented construction projects of the ancient world, yet a stubborn slice of popular culture still credits them to visitors from another planet. I want to ...
What if aliens were building a massive power plant?Last time, I talked about the "Kardashev scale," which classifies the ...
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