What Are Asteroids, Comets and Meteorites?

An asteroid is a rock that's floating around in space. It's it's orbiting the sun. That's an asteroid. A comet is a dirty snowball. They are essentially dirty snowballs. Some comets go out of the sun every few decades and so on so forth. The largest asteroid we think I think is Vesta. It's like a small micros, my mini planet kind of thing. These are all called asteroids.