• AeronMelon@lemmy.world
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    6 days ago

    It’s no dumber than Star Trek saying that slingshotting yourself around the sun is a tried and tested method of time travel.

    • Canaconda@lemmy.ca
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      6 days ago

      TBF they discovered it dring that episode, and only ever did it once again. Also it wasn’t just any star, and they slingshot into a warp speed most ships can’t achieve.

      But ya magnets + gravity + speed /= backwards time travel lol

      edit: Canonically James T Kirk wrote about time travel. The first chapter begins as follows.

      Dont.

    • rockSlayer@lemmy.blahaj.zone
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      6 days ago

      Well I mean Kirk did it that one time with his Vulcan zombie buddy, so obviously it’s been known for at least a century by that point

      • OpenStars@piefed.social
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        6 days ago

        He wasn’t a zombie - he was a mind-ghost that first haunted an elderly human being and then when it became more convenient switched to possess the body of an unwitting minutes-old child cellular clone. None of these btw were first asked if they would consent!

    • thenextguy@lemmy.world
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      6 days ago

      SG1 travel through wormhole that intersects a solar flare on one side of the sun goes back in time. Other side of the sun goes forward.

    • GreenKnight23@lemmy.world
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      6 days ago

      tbf the gravity of a sun is on a scale that puts it into black hole territory. I suppose by slingshotting around a star you could increase your gravitational state enough for time to “speed up” or “slow down”.

      this was actually observed in the Hafele–Keating experiment.

      though, it should be noted, we have observed time travel in three states:

      • normal flow
      • slow flow
      • faster flow

      but we have never observed an ability to roll back the passage of time. though it may be possible, it would most certainly require an exotic material (like red matter) to trigger such a perverse violation of time.

      • farting_gorilla@lemmy.world
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        6 days ago

        Genuine question, but does the sun’s gravity put it in black hole territory? I thought black holes had such massive gravity that not even light can escape it…and the sun produces a lot of light…

        • GreenKnight23@lemmy.world
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          6 days ago

          I mean more so nothing else in the universe can create such a gravitational pull than a star.

          if you think about celestial bodies on a graduated scale stars and black holes are practically in the same “class”.

          the difference is, you can escape the gravity of a star (with much difficulty) but you could never escape the gravity of a black hole.

          that said, time dilation can happen before reaching the event horizon of a black hole. we have observed this as light emitting around a black hole, kind of like a mirage.

          light, radio, magnetism, electricity are all based on different waveforms of similar energy and gravity is a constant influence to that energy. it can be used to bend or refract the beams like water does to light from an observation point.

          • SpacetimeMachine@lemmy.world
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            5 days ago

            It’s more accurate to say that gravity bends spacetime. The light we see being bent around a black hole is a consequence of that, and is evidence for time dilation as it is also evidence of space dilation. And (being extremely pedantic here, I know,) gravity bends spacetime and light travels through that spacetime in a straight line.

            Being in any gravity well will slow your time ever so slightly, by the time you die your feet will be about 100-500 nanoseconds younger than the top of your head due to being closer to the earth!

    • Black616Angel@discuss.tchncs.de
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      5 days ago

      Or the avengers explanation for time travel.

      Oh, when you are small, time runs slower? Wow, then we can definitely travel back in time like that, because… Quantum!

      • Omega@lemmy.world
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        4 days ago

        Also, Pym Articles aren’t exactly how they’re described, otherwise none of the Ant-Man movies would make any sense.