33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
3529977
320829
2

jan 13, 1610 - Galileo Galilei discovers Callisto, 4th satellite of Jupiter

Added to timeline:

Date:

jan 13, 1610
Now
~ 415 years ago