Here's why:

* Gravity: The Sun's gravity is much stronger than the Earth's gravity. This means that the Moon is primarily pulled towards the Sun.

* Earth's Orbit: The Earth and Moon are both orbiting the Sun together. The Moon's orbit around the Earth is actually a little wobbly, due to the Sun's gravitational influence.

While it seems like the Moon orbits the Earth, it's actually a bit more complex. It's like a smaller car hitched to a larger car. Both cars are traveling around a track (the Sun), but the smaller car is also moving slightly around the larger one.