what is a black hole
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vaccum cleaner of space
shaki47:
when a star 20 times mass than our Sun destroy itself it forms a black hole
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sorry yes it form black hole
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The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of the region from which no escape is possible is called the event horizon. ... Black holes of stellar mass are expected to form when very massive stars collapse at the end of their life cycle.
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