Question

What is mean by black hole ?​

Answer 1

The area around a black hole has three main parts: the event horizon, which isn't solid but is commonly considered the black hole's surface, the accretion disc where material accumulates before it falls in and the corona, a cloud of superheated particles just outside the event horizon.

Answer 2

Answer:

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Explanation:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.