Abu'l Hassan Ali ibn Radwan Al-Misri was an Arab of Egyptian origin who was a physician, astrologer and astronomer, born in Giza.
14th century painting of Ali Ibn Radwan (astronomical clock in St. Nicholas' Church (Stralsund)
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. Appearing between April 30 and May 1, 1006, 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. Modern astronomers now consider its distance from Earth to be about 7,200 light-years or 2,200 parsecs.
False-colour X-ray image of SN 1006 supernova remnant
SN 1006 remnant expansion comparison