Celestial body - naturally made object outside Earth's atmosphere
Satellite - an object orbiting a celestial body of a large mass
Star - a celestial body that generates its own light and heat, consisting of a mass of gas held by its own gravity
Planet - a celestial body that orbits a star
Moon - a natural satellite of a planet
Asteroid - a small rocky body in space
Comet - a dusty snowball orbiting a star
Solar system - a group of planets, asteroids, comets, and other celestial bodies that all orbit a star
Galaxy - a large system of stars held together by their gravity
