human
What's the difference between a meteorite and a comet?
assistant
A meteor is a small body of rock or metal that enters the Earth's atmosphere from outer space. It typically burns up in the atmosphere, leaving behind a streak of light as it disintegrates. A comet is a large body of dust, ice, and gas that orbits around the Sun. Comets are made up of two parts: a nucleus (the core) and a coma (the cloudy envelope). The nucleus is made up of dust, ice, and rocky material, while the coma is composed of dust and gas.