Ch37 - Space and the origin of the universe

    Cards (1)

    • 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
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