Question

What is black hole and white hole

Answer 1

Explanation:

In general relativity, a white hole is a hypothetical region of spacetime which cannot be entered from the outside, although matter and light can escape from it. In this sense, it is the reverse of a black hole, which can only be entered from the outside and from which matter and light cannot escape.

Answer 2

Answer:

Explanation:

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In short, the Event Horizon of a black hole is a name we give to the region of spacetime beyond which anything that drops into it can never come back out. Not even light itself. This is contrasted by a white hole, which literally pushes you away by spitting material at you.