Question

question 4
1 pts
according to copernicus model of the solar system a planet undergoes retrograde motion when

the planets moves backward on its orbit.
the earth moves backwards along its orbit.
earth passes the planet while they orbit.
the planet moves backward along its epicycle.
the earth moves backwards along its epicycle.

Explanation:

In Copernicus' heliocentric model, retrograde motion of a planet occurs when Earth, which moves faster in its orbit around the Sun, passes a slower - moving outer planet. The relative motion makes the outer planet appear to move backward in the sky from our perspective on Earth.

Answer:

Earth passes the planet while they orbit.