The Crab Nebula Is a Gorgeous Mystery

In 1054 BCE, a new light blazed in the night sky, four times brighter than Venus. Chinese astronomers called it a “guest star,” but today we call it a supernova: the dying explosion of a massive star. The star that created the supernova of 1054 had been dead for 6500 years by the time the light of its explosion reached Earth.

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