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and also, are black holes inside black holes possible?

- Thread starter BATMANofPHYSICS
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- #1

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and also, are black holes inside black holes possible?

- #2

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But...

If there's an expert in General Relativity willing to comment, an alternative question would be, in the Schwarzschild metric, can spherical shells of negative mass (or some other such thing) within the event horizon of one black hole, make the local curvature flat enough that you can meaningfully talk about a second event horizon further down?

Maybe one way of thinking about it would be to say whether such a shell would allow you to arrest your descent if you had a relativistic orbital velocity?

I know very little about General relativity, so I can't comment beyond that.

- #3

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White holes are generally considered to be a mathematical oddity with no physical reality.

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Indeed, negative mass is a mathematical oddity.