Comment on 1.1 History

RememberTheApollo_@lemmy.world ⁨11⁩ ⁨months⁩ ago

• arken@lemmy.world ⁨11⁩ ⁨months⁩ ago

  Surely that’s “heavy stuff”?

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  • Iron_Lynx@lemmy.world ⁨11⁩ ⁨months⁩ ago

    And maybe also “big stuff”. I suppose those two overlap quite a lot?

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    • Corkyskog@sh.itjust.works ⁨11⁩ ⁨months⁩ ago

      A nebula is one exception

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  • afraid_of_zombies@lemmy.world ⁨11⁩ ⁨months⁩ ago

    I thought that meant black holes

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• mmcmonster@lemmy.world ⁨11⁩ ⁨months⁩ ago

  How about something simple: Why does gravity feel the same as acceleration?

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  • applebusch@lemmy.world ⁨11⁩ ⁨months⁩ ago

    You can’t feel gravity. What we feel really is acceleration, the acceleration of the earth pushing us up against gravity.

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  • Natanael@slrpnk.net ⁨11⁩ ⁨months⁩ ago

    Because of relativistic frames of reference.

    Standing on a surface in a gravity well means you’re being constantly pushed out of an inertial frame, by not allowing you to follow a geodesic path in spacetime, and the same effect happens under acceleration.

    youtu.be/XRr1kaXKBsU

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