China saw a lit-up supernova in 1054. After 1,000 years, NASA finds its remains still moving

Nearly 1,000 years after the 1054 supernova, NASA's Hubble finds the Crab Nebula is still expanding, helping scientists study ...
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July 4, 1054: The Crab Nebula supernova explodes

On July 4, 1054, a supernova explosion occurred, marking the death of a star thought to be nine to 11 times more massive than ...