Galileo Galilei observes a few in the 4 greatest moons of Jupiter for The 1st time. He named them, and in turn the four are called the Galilean moons. Ganymede not found out by him until January 13. There are lots of unresolved difficulties While using the grand tack speculation. https://kerupuk30315826.jiliblog.com/94232539/makanan-sehat-an-overview