"God put Earth at the center of the universe. Everything revolves around us because we are the most important."
Copernicus was a mathematician and an astronomer. He studied for 25 years and came up with the Heliocentric theory.
Copernicus believed that everything revolved around the sun. He didn't publish his finding until his death in 1543 because he knew the church wouldn't agree and they would punish him.
Kepler was an astronomer, mathematician, and astrologer who concluded that the planets moved elliptically, not in circles.
Galileo built his first telescope in 1609. He discovered that Jupiter had 4 moons, the sun had dark spots, the moon was made of earth-like substances, and Copernicus was right.
The church and protestant leaders were against Galileo's findings because they challenged religious beliefs. The church forced him to stand trial at the Inquisition. After he was torcheres he signed and read a confession agreeing Copernicus was false. He lived under house arrest until he died in 1642.