Before the Big Bang: A Twin Universe?

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The new study suggests that the universe that came before our own universe was its identical twin. Image credit: NASA and ESA.
The new study suggests that the universe that came before our own universe was its identical twin. Image credit: NASA and ESA.

Until very recently, asking what happened at or before the Big Bang was considered by physicists to be a religious question. General relativity theory just doesn’t go there – at T=0, it spews out zeros, infinities, and errors – and so the question didn’t make sense from a scientific view.


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