A dozen black holes may lie at the centre of our galaxy

Re:A dozen black holes may lie at the centre of our galaxy by azernik on Friday April 06, 2018 @11:43AM (#16774088)

We have direct proof of:

* extremely large masses

* in very small volumes

* that are not, themselves, emitting anything

It could be many things, but they pretty much all fit the definition of "black hole".

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Re:A dozen black holes may lie at the centre of our galaxy by WJW on Friday April 06, 2018 @03:13PM (#16776435)

I think this is as definitive a proof we'll get until we get close enough to directly measure Hawking radiation. Of course, by that time we should also be close enough to "see" the black hole directly...

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