Astronomers reveal first image of the black hole at the heart of our galaxy

Re:Astronomers reveal first image of the black hole at the h... by mhandley on Thursday May 12, 2022 @10:23AM (#31354676)

Any evidence supporting general relativity at these scales is presumably also evidence in favour of dark matter actually being matter, as opposed to gravitational theory needing modification. Seems like we can still learn quite a bit from ruling out alternatives, even if it's not the quick answer we might like.

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Re:Astronomers reveal first image of the black hole at the h... by monocasa on Thursday May 12, 2022 @11:40AM (#31355761)

The Schwarzschild radius of a 4M solar mass black hole like Sagittarius A* is only (lol) about 7M km. Most of the MOND theories I've seen are about fall off curves at very large distances (ie. galatic scales) being more complex than GR suggests, so I'm not sure this is really proof either way. (And I say this as not a MOND adherent).

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Re:Astronomers reveal first image of the black hole at the h... by nerdponx on Thursday May 12, 2022 @10:31AM (#31354768)

Why is that the case?

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Re:Astronomers reveal first image of the black hole at the h... by cozzyd on Thursday May 12, 2022 @11:02AM (#31355252)

Well maybe it's more evidence against MOND-like theories explaining dark matter, but those already have little buy-in nowadays.

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