* The Sun is a star. It's a massive ball of hot gas that generates its own light and heat.
* Stars are in galaxies. Our Sun is just one star in a vast collection of stars called the Milky Way galaxy.
* Stars orbit the center of their galaxy. The Sun, along with all the stars in the Milky Way, orbits around the galaxy's central black hole.
Think of it like this: imagine a giant spinning carousel. The Sun is one of the horses on the carousel, and the other stars are the other horses. They all spin around the center of the carousel (the galaxy's center).