Physics
Our universe could be reborn as a bouncing baby cosmos
A new model shows how the universe could survive a "big bounce" rather than a big bang, without the need for complex new physics
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A new model shows how the universe could survive a "big bounce" rather than a big bang, without the need for complex new physics
An undiscovered, aloof particle could help explain why the universe is expanding faster than it should – and we may have already seen hints of it