Which contributions did Galileo make to the model of the solar system? Check all that apply.

When Galileo invented the telescope, he discovered four of Jupiter's moons, and observed that the moons followed the same laws of motion as the planets orbiting the sun. Galileo then made many observations that convinced people that Copernicus's heliocentric model was indeed correct.

How was Aristarchus's explanation of the movement of objects in the sky different from other scientists' earlier explanations?