Supernova SN 1006

SN 1006 was a supernova, widely seen on Earth beginning in the year 1006; Earth was about 7,200 light years away from the supernova. It was the brightest apparent magnitude stellar event in recorded history, reaching an estimated −7.5 visual magnitude. First appearing in the constellation of Lupus between April 30 and May 1 of that year, this “guest star” was described by observers in China, Egypt, Iraq, Japan, Switzerland, and North America.

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