Question

What was significant about Galileo's discovery of the moons of Jupiter?

Answer 1

Earth centered universe the story for 1500 years.l

Explanation:

Copernicus changed that. But the 4 moons orbiting Jupiter gave the first proof that the center of everything is not earth..It was Galileo Galilee who observed the Jupiter with his small telescope-in 1609 and found the 4 moons in orbit aroun the planet Jupiter.
picture credit en wikipedia org.