BlackHole
A Black Hole is region of space where gravity is so immensely strong that even light cannot escape it. Such a region is left behind hen gravity crushes a massive sun in on itself, shrinking it to a tiny point. A BlackHole therefore represents the final victory of gravity over all the other forces in nature. Blackholes have some extraordinary properties and yet astronomers have evidence that they really do exist out in space.
Science and invention Encyclopedia
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