Tag Info

New answers tagged

1

It's true that traversable wormholes would theoretically allow for travel into the past according to general relativity (though this may be ruled out by quantum effects in whatever theory of quantum gravity eventually replaces general relativity, see the chronology protection conjecture). But the only way this would happen is if one mouth of the wormhole ...


0

If your wormhole is a black hole, then you can't send anything to A from the region below the event horizon. More importantly, these black hole wormholes (Schwarzschild black-white hole, Reissner-Nordstrom, or Kerr-Newman) are generally assumed to lead to some other, very far place in spacetime (or other spacetime). Travelling to the past is generally ...


0

I am not sure that the alien can "aim" at our past, nor that we can "aim" at the future because I see time as a construct. We see two or more events occur in 3-space and we measure some interval between them. That is true. But, I have yet to hear anyone describe "naked time" (that is just time without allusion to some other event that defines it.) As such, ...


0

You've mostly only stumbled upon one fact with your list of paradoxes: a lot of the things presented in the movie Interstellar are not parts of a physical theory. This includes: "The bulk", whatever that's supposed to mean, and especially Arms reaching through "the bulk" (???) True back-in-time communication/time travel, "Tessaracts" (the word "tessaract" ...


0

Is this really possible? No. Or does Hawking's mechanism protect this system from a causality violation, destroying the CTCs in it? No. Hawking's chronology protection conjecture is redundant because time travel is science fiction, because there is no forward travel through time, and no backward travel through time, because there is no motion through ...



Top 50 recent answers are included