Albert Einstein thought that a black hole—a collapsed star so dense that even light could not escape its thrall—was too preposterous a notion to be real.
Einstein was wrong.
A black hole is a place exiled from the rest of the universe. Anything that enters its horizon is lost forever! It could be a person, a star or even a planet! This is as marvelous and scary as it gets. This video is sure to give you goosebumps!
Video by Vsauce.
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