Consider the sidereal period for Saturn. Which planet (or planets) will be in the same place in its orbit at the beginning and at the end of one sidereal period of Saturn?
A) neither Saturn nor Earth
B) Earth but not Saturn
C) Saturn but not Earth
D) both Saturn and Earth

Question

Quizplus · Accepted Answer

The sidereal period of a planet is the time it takes to orbit once around the Sun relative to the fixed stars. Therefore, at the end of its sidereal period, Saturn will be in the same place in its orbit around the Sun as it was at the beginning. Earth's position relative to Saturn will change due to Earth's own orbit around the Sun.

Consider the Sidereal Period for Saturn