• Waldowal@lemmy.world
    link
    fedilink
    arrow-up
    9
    arrow-down
    4
    ·
    8 months ago

    Why couldn’t this still be “big bang”? Look at a grenade for example. When it explodes, a shock wave expands from it in a near perfect sphere, but the fragments previous packed inside of it explode out at different speeds depending on their mass.

    If you were in the center of that explosion, measuring the speed of fragments traveling away from you, they’d travel at different speeds. Only the initial shockwave would be constant.

    • Postcard64@lemmy.world
      link
      fedilink
      arrow-up
      12
      ·
      8 months ago

      This problem is not AT ALL about the geometrical shape of the expansion of the universe. It’s about 2 different formulas that should give the same result for the rate of the universe, but give different results. I don’t blame you, the article title is extremely misleading.

    • Lyrl@lemm.ee
      link
      fedilink
      English
      arrow-up
      12
      ·
      8 months ago

      This is more like you measure the fragment speeds with both a laser and with radar, and get different readings off the same fragment.

    • rdri@lemmy.world
      link
      fedilink
      arrow-up
      4
      arrow-down
      1
      ·
      edit-2
      8 months ago

      Maybe because the speed of things is not the same thing as the speed of space expansion.