Heavenly Bodies

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Across
  1. 2. miniature planets between mars and jupiter
  2. 6. tilted 82 degrees on its axis
  3. 7. a moon of mars
  4. 10. massive body with strong gravity that doesn't allow anything to escape it
  5. 12. the largest of the asteroids
  6. 15. natural satellite of the earth
  7. 16. huge system of stars; Andromeda is an example
  8. 17. our galaxy
  9. 19. the earth's twin planet
  10. 20. heavenly body with a head and tail that orbits the earth.
Down
  1. 1. rapidly rotating neutron star that emits light
  2. 3. largest moon of our solar system
  3. 4. first artificial satellite put in space by Russia
  4. 5. planet with a big red spot, probably a stormy area
  5. 8. first planet known to have rings, three
  6. 9. closest start to our solar system
  7. 11. closest planet to the sun with no atmosphere
  8. 13. closest star to the earth
  9. 14. a moon of jupiter
  10. 17. planet named after the Roman god of war
  11. 18. planet named after the Roman god of the sea