* Sun: The Sun is a star, a giant ball of hot gas. It's about 109 times wider than Earth and 333,000 times more massive.
* Moon: The Moon is a natural satellite that orbits Earth. It's about 1/4 the size of Earth.
Think of it this way: You could fit about 1.3 million Earths inside the Sun, but you could fit about 50 Moons inside Earth.
The difference in size is truly incredible!