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Wormholes may not exist—we've found they reveal something deeper about time and the universe
Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...
How cold is space? Does it ever drop to absolute zero, and what happens if you fall into it without a spacesuit? When you purchase through links on our site, we may earn an affiliate commission.
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