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Alien Megastructures May Be Physically Feasible, a New Study Suggests

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...
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Could Earth handle an alien encounter?

Abraham ‘Avi’ Loeb, a Harvard University astrophysicist, spends most of his waking hours thinking about a giant rock. The rock’s name isn’t too catchy, 3I/ATLAS, and according to some, it’s more of a ...