Is There an 'Anti-Universe' Running Backward in Time?

Is There an ‘Anti-Universe’ Running Backward in Time?

Andriy OnufriyenkoGetty Images Could a backward, mirror universe explain the existence of dark matter? If an anti-universe exists, it would run backward in time, before the Big Bang. Dark matter, then, could be right-handed neutrinos implied by the mirror universe. Scientists believe there could be an “anti-universe” somewhere out there that looks like the mirror …

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