Black Holes
SciShow Tangents
00:00
Is There a White Hole?
There are many reasons why this is so hypothetical that many scientists don't think it even can happen. The second law of thermo dynamics is that entropy across the universe must increase. A white hole would theoretically break that second law, but in a very short way. There there's a group of scientists that think that the big bang could have approximated a white hole.
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