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Have Aliens Already Mined the Moon?
Mining robots, moon factories, and self-replicating spacecraft
Forget flying saucers — if alien probes have visited our solar system, they’re probably in the asteroid belt or quietly building factories on the moon. Shane Hewitt speaks with Alex Ellery, professor of mechanical and aerospace engineering at Carleton University, about how interstellar spacecraft might actually work — and why the moon’s aluminum-rich soil is a bigger prize than Earth itself.
Ellery explains real-world efforts to mine and 3D print with lunar materials, outlines concepts for self-replicating…
The skinny
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