We could get messages back from spacecraft sent through a wormhole

If you ever happen to fall through a wormhole in space, you won’t be coming back. It will snap shut behind you. But you may have just enough time to send a message to the rest of us from the other side, researchers report in the Nov. 15 Physical Review D.

No one has yet seen a wormhole, but theoretically they could provide shortcuts to distant parts of the universe, or to other universes entirely, if they exist (SN: 7/27/17). Physicists have long known that one of the most commonly studied types of wormholes would be extremely unstable and would collapse if any matter entered it. It wasn’t clear, though,

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