Born in Pisa, Italy
Lived in Arcetri, Italy
Galileo studied and the University of Pisa, in astronomy, physics, and mathematics.
Callisto is a moon of Jupiter. It was discovered by Galileo in 1610. Its the third-largest moon in the solar system and the second-largest in the Jovian system.
Lo was also discovered in 1610. Lo in the innermost of the four Galilean moons of the planet Jupiter.
Galileo also discovered Europa and Ganymede.
Galileo invented the telescope, compass, and thermometer!