What is a white hole?
Quick Answer
A white hole is a hypothetical object in general relativity that would do the opposite of a black hole: matter and light could come out, but nothing could enter. It has never been observed.
The Full Story
White holes arise in some mathematical solutions to Einstein’s equations, often as the time-reversed counterpart of black holes. In theory, they would expel matter and radiation while preventing anything from crossing inward. However, no white hole has ever been confirmed in nature, and many physicists think they are unlikely to exist as stable astrophysical objects. They often appear in speculative discussions about wormholes and cosmology. For now, white holes remain a theoretical idea rather than an observed fact.
Key Facts
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"Could the universe have the opposite of a black hole?"
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