1001 years ago, an extraordinary astronomical event occurred in the sky: the most intense supernova ever witnessed and recorded by human beings appeared in the Earth's sky in the year 1006 CE. The blast was seen from Europe to China. One of the witnesses who saw it was a young man from Cairo, Ali ibn Ridwan, then 18 years old. Later on, he produced one of the most significant records about this astronomical event. Nowadays, astronomers scrutinize his record to collect information about the 1006 supernova.
"Three Times Greater than Venus": Ibn Ridhwan's Observation of Supernova 1006
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Figure 1: Sarajevo skyline. (Source: http://www.skyscrapercity.com/showthread.php?t=597483&page=66).
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