Which are features of Copernicus's model of the solar system? Select the three correct answers.(2 points)

Question

Responses

The Sun is at the center.
The Sun is at the center.

The outer planets move in epicycles.
The outer planets move in epicycles.

The planets move in perfect circles.
The planets move in perfect circles.

Earth is fixed to a crystalline sphere.
Earth is fixed to a crystalline sphere.

All planets orbit the Sun at the same speed.
All planets orbit the Sun at the same speed.

The stars are fixed to an outer sphere.

Answer 1

The three correct features of Copernicus's model of the solar system are:

1. The Sun is at the center.
2. The planets move in perfect circles.
3. The stars are fixed to an outer sphere.

The Copernican model proposed a heliocentric system where the Sun is the central body, and it suggested that planets, including Earth, move around the Sun, although it still retained the concept of perfect circular orbits and fixed stars.