Physicists have used Google's quantum computer to send a signal through a wormhole, a shortcut in space-time first theorized by Einstein and Rosen in 1935. The landmark experiment was just published in Nature.
https://www.quantamagazine.org/physicists-create-a-wormhole-using-a-quantum-computer-20221130/
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@quesoloAna Terrifying, and awesome all at the same time. Hey, if that's what they really did, then reverse time travel goes back into the possible list.
