The time that elapses before the Sun returns to the same point in space in the solar system compared with the background stars in our sky is one:
A) solar day.
B) Gregorian year.
C) tropical year.
D) sidereal year.

Question

Quizplus · Accepted Answer

The time it takes for the Sun to return to the same point in space compared to the background stars is called a sidereal year. This is because it is measured relative to the fixed stars rather than the movement of the Earth in its orbit around the Sun. The sidereal year is about 20 minutes longer than the tropical year, which is based on the seasons and the position of the Sun in the sky. This makes the sidereal year about 365.25 days long.

The Time That Elapses Before the Sun Returns to the Same