- 533 – Mercurius becomes Pope John II, the first pope to adopt a new name upon elevation to the papacy.[3]
- 1492 – Reconquista: The Emirate of Granada, the last Moorish stronghold in Spain, surrenders.[4]
- 1959 – Luna 1, the first spacecraft to reach the vicinity of the Moon and to orbit the Sun, is launched by the Soviet Union.
Births:
- 1920 – Isaac Asimov, Russian-American chemist, author, and academic (d. 1992)