Question

What is black hole??
Define black hole

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Answer 1

Answer:

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

Answer 2

Answer:

diffusion of light by killing of planet and hydrogen to helium when hydrogen finishes the star correct condences and elements become heat and form iron and becomes black hole or supernova explotion simply diffusion of light by star