Births on August 20

Louis Bourdaloue, French preacher and academic (d. 1704)

Louis Bourdaloue (20 August 1632 – 13 May 1704) was a French Jesuit and preacher.

22 Feb

Dialogue Concerning the Two Chief World Systems
Galileo's Dialogue Concerning the Two Chief World Systems is published.
16 Nov

Battle of Lützen (1632)
Thirty Years' War: Battle of Lützen is fought, the Swedes are victorious but King Gustavus Adolphus of Sweden dies in the battle.