* Stars vs. the Sun: The sun is itself a star. It's just the star that's closest to us. Most other stars are much, much larger than our sun, but some are smaller.

* Stars vs. the Moon: The moon is a satellite that orbits the Earth. It is much smaller than the sun or any star.

So, the answer depends on the star:

* Most stars are larger than the sun and moon.

* Some stars are smaller than the sun, but still larger than the moon.

* There are some very small stars that are smaller than the moon.

Let me know if you have any other space questions!