Black holes could be right now zooming through the Universe at astonishing speeds just under 10 percent of the speed of light.
  • menturi
    4·
    1 year ago

    Probably relative to the CMB (the frame of reference where there is no redshift or blueshift bias in any direction).

    • mookulator
      2·
      1 year ago

      Thank you! At that scale the simpler answers just don’t feel sufficient