Comment on 1.1 History

RememberTheApollo_@lemmy.world ⁨1⁩ ⁨year⁩ ago

• arken@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Surely that’s “heavy stuff”?

  source

  • Iron_Lynx@lemmy.world ⁨1⁩ ⁨year⁩ ago

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

    source

    • Corkyskog@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

      A nebula is one exception

      source
  • afraid_of_zombies@lemmy.world ⁨1⁩ ⁨year⁩ ago

    I thought that meant black holes

    source
• mmcmonster@lemmy.world ⁨1⁩ ⁨year⁩ ago

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

  source

  • applebusch@lemmy.world ⁨1⁩ ⁨year⁩ ago

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

    source
  • Natanael@slrpnk.net ⁨1⁩ ⁨year⁩ 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

    source