Answer: Each planet spins in an epicycle.
Step-by-step explanation:
Aristotle and Ptolemy believed that the Earth was the center of the universe and all other planets and the sun rotated around it. Galileo, a very important figure in modern astronomy, disproved this by reporting his finds after using his telescope.
He noted that every planet spins in an epicycle around the sun which would mean that the sun was at the center and the planets rotated around it thereby disproving the Aristotle and Ptolemy.