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Earth, Rotation Sped Up
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Around 1 billion years ago, our planet likely took only 19 hours to complete a single rotation, before slowing to the 24 hours we experience today. It also changes on shorter timescales.
Szapudi and their colleagues’ new model indicates the universe finishes a single rotation once every 500 billion years—meaning there’s still quite a bit of time before the universe ...
Around 1 billion years ago, our planet likely took only 19 hours to complete a single rotation, before slowing to the 24 hours we experience today. It also changes on shorter timescales.
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