Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

The galaxy cluster that broke modified gravity + Do we live in a rotating universe?

C C Offline
Do we live in a rotating universe? If we did, we could travel back in time (i.e., Gödel metric)

The galaxy cluster that broke modified gravity

We can measure the amount of matter in the Universe and also the effects of gravity, and these two methods, with normal matter alone, just don't add up. One can imagine either adding a new ingredient, like dark matter, or changing the laws of gravity, modifying them from Einstein's original form. But one class of systems, that of colliding galaxy clusters, gives us a way to tell the two ideas apart. Unless modified gravity is a near-perfect dark matter mimic, the idea falls apart in the face of this evidence.
Kornee Offline
A lengthy back and forth arguing at PF over a theorist's claim to explain all evidence in favor of DM and DE as just artifacts of 'not using GR correctly':
A one on one debate to the death match between Siegel and Deur would be interesting.
I'm satisfied either way that Deur's claim to just be using GR 'correctly' is not correct - it has to actually to be another theory.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Article 'Unbelievable': Astronomer claims 'direct evidence' of gravity breaking down C C 1 37 Aug 12, 2023 04:07 PM
Last Post: C C
  Article Gravity "hum" pervades cosmos + Mars life killed? + Expanding universe: a mirage? C C 0 37 Jun 28, 2023 05:39 PM
Last Post: C C
  Article Astronomers search for galaxy-wide transmitter beacon at center of Milky Way C C 0 15 Jun 5, 2023 04:27 PM
Last Post: C C
  Article Einstein’s theory of gravity supported by map + Agreement helps study of metal worlds C C 0 18 Apr 13, 2023 02:19 PM
Last Post: C C
  Intercepting the next interstellar visitor + BH theory defied + Dragonfly 44 galaxy C C 1 129 Nov 14, 2022 08:01 AM
Last Post: Kornee
  A protogalaxy in the Milky Way may be our galaxy’s original nucleus C C 0 55 Sep 23, 2022 04:32 AM
Last Post: C C
  A new study confirms that gravity has remained constant for entire age of universe C C 0 36 Aug 29, 2022 08:35 PM
Last Post: C C
  Another "gravity mystery could soon be solved" with help from new theoretical model C C 13 183 Jul 17, 2022 02:58 AM
Last Post: confused2
  MOND gravity strongly favored over DM in new review Kornee 2 58 Jul 16, 2022 02:20 AM
Last Post: Tony2022
  First Photo of Super Massive Black Hole Sgr A* in Center of Our Galaxy Yazata 2 39 May 13, 2022 03:35 AM
Last Post: Syne

Users browsing this thread: 1 Guest(s)