SPACE

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Across
  1. 1. Huge system of stars
  2. 5. A cloud of gas and dust in space
  3. 8. The sun and it's orbiting bodies
  4. 14. Our home planet
  5. 15. An exploding star
  6. 16. The universe
  7. 18. A small rocky body orbiting the sun
  8. 19. Someone who travels in space
Down
  1. 1. Force pulling objects together
  2. 2. Earth's natural satellite
  3. 3. Icy body with a tail
  4. 4. A hot, glowing ball of gas
  5. 6. Someone who studies the stars
  6. 7. Large body that orbits a star
  7. 9. A spacecraft where astronouts live
  8. 10. Object that orbits a planet
  9. 11. A tool to see distance space objects
  10. 12. A space area with super strong gravity
  11. 13. Path of a planet around a star
  12. 17. A light streak from a burning space rock