The Moon's synodic period is longer than its sidereal period.

Question

Quizplus · Accepted Answer

The synodic period of the Moon, which is the time between two consecutive new or full moons, is longer than its sidereal period, which is the time for the Moon to return to the same position relative to the stars. This is because while the Moon is orbiting around the Earth, the Earth is also moving around the Sun, causing the Moon to have to travel a little further to align with the Sun for a new or full moon.

The Moon's Synodic Period Is Longer Than Its Sidereal Period