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The Brightest Star Ever Recorded

SkyCairo, Egypt · May 1006Explained

In 1006 a new star appeared in the southern sky, bright enough to light the ground at night.

What was reported

In late April or early May 1006, observers around the world recorded a new star low in the southern sky, in the constellation Lupus. The Egyptian astronomer Ali ibn Ridwan, in Cairo, wrote that it was two and a half to three times the size of Venus and lit the ground like a quarter Moon.

Chinese, Japanese, Arab and European records also describe it. It stayed visible for months.

Explanations offered

It was a supernova, a white dwarf star exploding about 7,000 light years away, and it's thought to be the brightest star seen in recorded history. Its remnant, called SN 1006, was identified by radio astronomers in 1965 and is still studied today.

When
May 1006
Where
Cairo, Egypt
Witnesses
Astronomers in Egypt, China, Japan, the Arab world and Europe
Status
Explained

Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.