According to the geocentric view, everything in the heavens had to go around the Earth, which was the center of the universe. What objects did Galileo discover with his telescope that clearly didn't go around the Earth?
a) ring around the Sun
b) moons around the planet Jupiter
c) Pluto
d) the Earth's Moon
e) stars in the Milky Way that just kept going in a straight line

b) moons around the planet Jupiter

Explanation:

Galileo was the first astronomer to use the telescope to study the heavens and his observations made him conclude that earth was not at the centre of the universe and proved the Ptolemaic calculation of the earth at the centre of the universe wrong.  His discovery of the moon creators and the solar storms and the moons spinning around the Jupiter which did not go around the earth.