SN 1006

Supernova observed from Earth in 1006

SN 1006 was a supernova that is likely the brightest observed stellar event in recorded history, reaching an estimated −7.5 visual magnitude, and exceeding roughly sixteen times the brightness of Venus. First noted in 1006 some time between April 15 and May 1 (Julian calendar) in the constellation of Lupus, this "guest star" was described by observers across China, Japan, modern-day Iraq, Egypt, and Europe, and was possibly recorded in North American petroglyphs. Some reports state it was clearly visible in the daytime.

From Wikipedia, under CC BY-SA. More on occurri.