• davidgro@lemmy.world
      link
      fedilink
      English
      arrow-up
      4
      ·
      13 hours ago

      Changes in the gravitational field definitely travel, and do so at the speed of light.

      Look up LIGO

      • cuerdo@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        arrow-down
        2
        ·
        14 hours ago

        If the mass vanishes, then the gravity would also vanish, at the same time.

        • chuckleslord@lemmy.world
          link
          fedilink
          English
          arrow-up
          4
          ·
          13 hours ago

          False. If the mass vanished via magic, the effect would ripple out at the speed of light. Source, gravity waves which move at the speed of light.

        • cuerdo@lemmy.world
          link
          fedilink
          English
          arrow-up
          1
          ·
          14 hours ago

          But vanishing is magic, it goes against the laws of physics, so you could apply any fictional logic