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James Webb Space Telescope finds evidence for alternate theory of gravity

(thedebrief.org)
355 points jchanimal | 4 comments | 16 Nov 24 18:33 UTC | HN request time: 0.207s | source
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uoaei ◴[16 Nov 24 19:50 UTC] No.42158729[source]▶
I follow the lead author, Stacy McGaugh, via his blog where he posts discussions and musings about the latest research into the dark matter vs MOND debate: https://tritonstation.com/new-blog-page/

His arguments are very convincing and relatively clear. I am not an astrophysicist but I have two degrees in physics and have always found the dark matter theory to be lacking -- in absence of any evidence of causation whatsoever, dark matter can only be described trivially as "where we would put matter if we could to make our theory of gravity make sense," which is totally backwards from a basic scientific perspective.

Predictions based on modern MOND postulates are shown to be more and more accurate as our observational instruments continue to improve in sensitivity.

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1. halgir ◴[16 Nov 24 20:34 UTC] No.42159078[source]▶
I usually understand "dark matter" to be shorthand for the discrepancy between theory and observation. The explanation might indeed be matter that is dark, or it might be solved by entirely unexpected observations and/or changes to theory.
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2. mr_mitm ◴[16 Nov 24 20:49 UTC] No.42159191[source]▶
Not really. You might think this after watching Angela Coulliers video, but when you read something like "25% of the universe's energy content is made of dark matter", they do not mean changes to some theory. They literally mean non-baryonic matter.
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3. OutOfHere ◴[16 Nov 24 20:59 UTC] No.42159274[source]▶
Nope. It can mean change to some theory, without a need for matter. It is the difference between relativistic gravity and the corresponding observed mass.
4. zeroonetwothree ◴[16 Nov 24 22:12 UTC] No.42159825[source]▶
Energy content not only comes from matter but also from fields.