Question

Which was a belief of Copernicus's model of the solar system?

The planets move in perfect circles.
All planets orbit the Sun at the same speed.
The outer planets move in epicycles.
Earth is fixed to a crystalline sphere.

Answer 1

The planets move in perfect circles.

Step-by-step explanation:

In the 1500s Copernicus reintroduced the heliocentric model and suggested that the planets all orbit around the Sun in perfect circles.