How does Copernicus' model explain the retrograde motion of a planet?

which answer?



1. The only perfect shape is a circle, and the only perfect motion is uniform motion.



2. A planet has a different orbital distance and speed around the sun from Earth's orbital distance and speed around the sun.



3. A planet moves around a circle that itself moves along an orbit around Earth.



4. A planet slows down in its orbit when it is further from the sun, and speeds up in its orbit when it is closer to the sun.



10pts. to best answer. Thanks.How does Copernicus' model explain the retrograde motion of a planet?2.

inner planets move faster than outer planets, so sometimes we pass each other.How does Copernicus' model explain the retrograde motion of a planet?1.