<human>:  How does the moon's orbit work?
<bot>: The moon's orbit around Earth is an elliptical path that takes approximately 27.3 days to complete. As it orbits, the moon's distance from Earth varies over the course of its orbit from its closest point, known as the perigee, to its furthest point, known as the apogee. During this time, the moon is constantly being pulled toward Earth by its gravitational force, which affects its movement and the shape of its orbit. This same force is also responsible for the tidal forces experienced on Earth and causes the tidal bulge to rise and fall around the planet.