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First Star map 130BC
The first accurate star map was created with over 850 of the brightest stars. -
Jan 1, 1054
Taurus Supernova
Chinese astronomers observe supernova in Taurus -
Jan 1, 1120
Observatory in Ciaro
Construction of an observatory in Cairo was begun in 1120 A.D. This is possibly the first observatory built in Medieval Islam. But because the patron of the observatory was found guilty of several crimes he was sentenced to death. It was demolished in 1125. -
Galileo's discoveries
He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy. -
Mars Moons
Asaph Hall discovers Phobos and Deimos, the moons of Mars.