4 ms·

Evidence for anisotropy of cosmic acceleration (dark energy might not exist)

• lisper 6y ago
  Excellent accessible summary by Sabine Hossenfelder: https://www.youtube.com/watch?v=oqgKXQM8FpU https://www.youtube.com/watch?v=oqgKXQM8FpU The paper is from 2019 but adding that annotation to the title made it too long and I decided that the TL;DR "dark energy might not exist" was more important.
  • denis1 6y ago
    Followup video with Sabine Hossenfelder speaking with one of the authors of the paper: https://www.youtube.com/watch?v=B1mwYxkhMe8 https://www.youtube.com/watch?v=B1mwYxkhMe8
• throwaway81523 6y ago
  2019
• glial 6y ago
  > Thus the cosmic acceleration deduced from supernovae may be an artefact of our being non-Copernican observers, rather than evidence for a dominant component of “dark energy” in the Universe. Could someone help me understand what the meaning of “non-Copernican” is in this context?
  • lisper 6y ago
    Start with this: https://en.wikipedia.org/wiki/Copernican_principle https://en.wikipedia.org/wiki/Copernican_principle If that doesn't clear it up LMK and I'll try for a more ELI5-llike explanation.