Astronomers may have finally discovered convincing evidence of an elusive kind of supernova, one that could explain a bright explosion that lit up the night sky on Earth nearly 1,000 years ago and birthed the beautiful Crab Nebula, a new study finds.

Supernovas are giant explosions that can occur when stars die. These outbursts can briefly outshine all of the other suns in these stars’ galaxies, making them visible from halfway across the universe.

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