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What happened before the Big Bang?
Did the Big Bang mark the beginning of time? Not if we live in a bubble multiverse!
Gravitational waves have provided a wealth of information about black holes. But could other objects be hiding in this data too? Researchers are exploring this idea, which may also help resolve the mystery of dark matter.
Physicists have figured out how we might detect hypothetical boson stars. If we do, then this would count as a major step towards solving the riddle of dark matter,