On This Day

What Happened on January 7, 1610

Historical Events


DiscoveryHistoric Discovery

Galileo Galilei discovers the first three moons of Jupiter: Io, Europa & Ganymede

Astronomer and Physicist Galileo Galilei
Astronomer and Physicist
Galileo Galilei

1610 Highlights

About January 7, 1610

Day of the Week: Thursday
How Long Ago? 411 years and 16 days
Leap Year: No

Star Sign: Capricorn