November 26, 20232 yr What did he mean when he said at 6:45 that the size of Sagittarius A is the size of the orbit of the Moon? It seems to be compared more to the size of the orbit of Mercury. Edited November 26, 20232 yr by dmwalker Dugald Walker
November 26, 20232 yr Author I'd have to go back and check but I recall he wasn't talking about the outer event horizon, but the black hole itself. The inner event horizon. The fact they may be tiny and explain dark matter was interesting. Edited November 26, 20232 yr by martin-w
November 26, 20232 yr I expect you are right. I didn't even know there were inner and outer event horizons. NASA talks about event horizons and event horizon shadows. The connection between white holes and dark matter sounds plausible to us, although not to many physicists but, as Rovelli said, physicists are winning Nobel Prizes for proving things which the majority thought impossible. Dugald Walker
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