Comment on OP has a realization

TheKracken@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

• IrateAnteater@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

  Also, if a civilization is advanced enough to create space-time bubbles, they are advanced enough to have speed matching cruise control.

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  • Beacon@fedia.io ⁨3⁩ ⁨weeks⁩ ago

    Seriously, you think building a world-separating spacetime bubble that can instantly travel lightyears away is believable, but that programming it to stay on a smooth predictable course along an orbital path is NOT believable?

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  • krooklochurm@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago

    But would they be advanced enough to see why kids like the sweet taste of Cinnamon Toast Crunch?

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    • dalekcaan@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

      xkcd apple jacks

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    • bassomitron@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

      What a random throwback reference, hahah

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• qjkxbmwvz@startrek.website ⁨3⁩ ⁨weeks⁩ ago

  That works for linear motion but not for rotation—that requires acceleration (provided by gravity).

  (I know, it’s a meme comment and I’m being pedantic…)

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• BootLoop@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

  I forgot when the first manned spacecraft went into zero gravity and they got left behind as the Earth hurled away from them but OP reminded me about it.

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  • theunknownmuncher@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    Well “zero gravity” doesn’t really mean zero gravity. It’s free fall (due to gravity). If you’re in orbit, you’re moving so fast “sideways” that you perpetually “miss” the Earth and just continue falling forever.

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  • Pencilnoob@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    the spacecraft doesn’t immediately lose all the celestial relative velocity just by going into space, it’s still moving extremely fast:

    • with the sun and earth through the galaxy
    • with the Earth around the sun
    • and is still affected by Earth’s gravity, just now it’s able to counter Earth’s pull with a faster motion pulling it outward, so it balances out to appear weightless

    Think of how the moon gets dragged along with the Earth around the sun and the sun drags the Earth and moon along through the galaxy.

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  • mnemonicmonkeys@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

    zero gravity

    “Zero gravity” isn’t actually zero gravity. In orbit, you’re still falling, the planet is just curving away at the same rate as the fall

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• witty_username@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

  Wouldn’t it be inertia?

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