1072
Normans capture Palermo
After a siege of several months, Robert Guiscard and Roger de Hauteville took the Sicilian capital from its Kalbid emirs. Palermo, one of the largest cities in the Mediterranean, with five hundred thousand people and a skyline of minarets, became the jewel of a strange new Norman-Arab-Greek kingdom. The conquerors retained the existing Arabic bureaucracy, a pragmatic decision that made Sicily uniquely cosmopolitan among Christian realms.
Shen Kuo Begins Astronomical Observations for the Song Court
The polymath Shen Kuo, appointed to the Song Astronomical Bureau, launched an ambitious program of celestial observation with his colleague Wei Pu: three measurements per night, every night, for five years. Their goal was nothing less than correcting China's star charts and refining calendar calculations to match observed planetary motions. No European astronomer would attempt observations of comparable scope until Tycho Brahe, five centuries later.
Death of Ly Thanh Tong, Builder of Dai Viet
Emperor Ly Thanh Tong died in February, leaving behind a Vietnam transformed: renamed, culturally enriched, territorially expanded, and furnished with the Temple of Literature that would educate mandarins for centuries. His son Ly Nhan Tong, only seven years old, inherited a state strong enough to survive a regency - and soon, strong enough to fight the Song dynasty itself to a standstill on the northern frontier.
Death of Alp Arslan
The Seljuk sultan who had crushed Byzantium at Manzikert was stabbed by a captured rebel fortress commander in Transoxiana just months after his triumph. His teenage son Malik Shah inherited the empire under the continuing guidance of the vizier Nizam al-Mulk and presided over its golden age. Alp Arslan reportedly mocked the bound captive, who broke free and struck with a hidden blade.