The Type II supernova that created the Crab Nebula was seen by Chinese and Arab astronomers in the year A.D.1054.Because the star is 6,500 light-years away from us,we know the star exploded in the year

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The supernova was observed in A.D. 1054, and since the star is 6,500 light-years away, the explosion actually occurred 6,500 years before it was seen on Earth, which is 5446 B.C.

The Type II Supernova That Created the Crab Nebula Was