The so called “crisis in cosmology” (or Hubble tension) is the biggest problem in astrophysics right now, with two main methods for calculating the expansion rate of the Universe, which completely disagree with eac†teemh other.
This month a new study came out pointing out that the Milky Way is found in the Laniakea supercluster of galaxies, a very dense part of the Universe.
This throws off our measurements of the velocities with which galaxies appear to be moving away from us due to the expansion rate of the Universe, and if you take this into account properly, you end up making the “crisis in cosmology” WORSE than before…
00:00 - Introduction: what’s the “crisis in cosmology”?
03:10 - What is the Laniakea cluster and why is it important?
05:58 - How much does Laniakea affect the rate of expansion you measure?
09:06 - Caveats on this research
10:34 - Upcoming JWST data that should solve the “crisis”
11:40 - Outro
12:06 - Brilliant
13:23 - Bloopers