7th January » Galileo Galilei makes his first observation of the four Galilean moons: Ganymede (moon) Ganymede, Callisto (moon) Callisto, Io (moon) Io and Europa (moon) Europa, although he is not able to distinguish the last two until the following day.
14th May » Henry IV of France is assassinated, bringing Louis XIII to the throne.
4th July » The Battle of Klushino is fought between forces of the Polish–Lithuanian Commonwealth and Tsardom of Russia or Russia during the Polish-Muscovite War (1605-1618) known as Polish-Muscovite War.
5th July » John Guy (governor) known as John Guy sets sail from Bristol with 39 other colonists for Newfoundland (island) called Newfoundland.
2nd August » Henry Hudson sails into what is now known as Hudson Bay thinking he had made it through the Northwest Passage and reached the Pacific Ocean.
9th August » The Anglo-Powhatan Wars or First Anglo-Powhatan War begins in Colony of Virginia known as colonial Virginia.
17th October » French king Louis XIII is crowned in Rheims.
Famous Birthdays in 1610
13th January » Archduchess Maria Anna of Austria (1610–1665) named Archduchess Maria Anna of Austria (d. 1665)
21st January » Elizabeth Fones, English-American settler (d. 1673)
1st April » Charles de Saint-Évremond, French soldier and critic (d. 1703)