hich are features of Copernicus's model of the solar system? Select the three correct answers.(3 points)

Question

Responses

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

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

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

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

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

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.

Copernicus proposed a heliocentric model where the Sun is at the center of the solar system and the planets, including Earth, orbit around it in circular paths. He also maintained the classical idea that the stars were fixed in a celestial sphere surrounding the solar system.