Space

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Across
  1. 2. large round object that orbits a star
  2. 5. an object that orbits a planet
  3. 8. any object outside of earth's atmosphere
  4. 10. study of celestial bodies
  5. 11. dusty snowball (made of ice and rock)
Down
  1. 1. dense star that light can escape from
  2. 3. a collection of planets, asteroids, comets, etc. orbiting a star
  3. 4. a rocky object that crashes into earth
  4. 6. a collection of solar systems orbiting a huge star or black hole
  5. 7. asteroids that enter the earth's atmosphere (shooting stars)
  6. 9. a rocky object (smaller than a planet) orbiting the sun