• tetris11@feddit.ukEnglish
    3·
    19 days ago

    CMBR isn’t homogenous though within our bubble, how can we assume the universe beyond our horizon is the same. We are but fish in a pond

    • Zephyr@sh.itjust.works
      3·
      19 days ago

      It’s more so about scale. If you zoomed out far enough the CMBR is homogeneous. You can zoom in to about anything and it’ll not be homogeneous.

      • tetris11@feddit.ukEnglish
        11·
        19 days ago

        This map is covers the entire observable universe, it’s as zoomed out as it can go and it looks pretty rough in patches.

        Edit: Oh, unless by zoomed out you mean beyond the observable

        • Zephyr@sh.itjust.works
          1·
          18 days ago

          Yup, the observable universe shouldn’t be anything special necessarily. That is the universe should to on beyond it.

          • tetris11@feddit.ukEnglish
            11·
            18 days ago

            But the only assumptions we can make about the unobserved universe comes from particle/quantum physics, which we explore in an idealised form

            • Zephyr@sh.itjust.works
              2·
              18 days ago

              There’s some gravitational drag that’s been observed that would really only make sense if the matter was being dragged by something massive beyond the observable universe.