A comet is basically a dirty snowball that sometimes contains gas. A meteor is a rock in space that is less than a meter in diameter. A meteorite is a meteor that has passed through our atmosphere and is right here with us. An asteroid is the same as a meteor, but bigger. These words have baffled me as I never knew the differences between them.
Mannheim Planetarium to go with our astronomy studies. The show covered the birth of a universe, constellations, and how the sun travels across the sky. I highly recommend it for anyone living in the area.