Lilyan´s Puzzle

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Across
  1. 3. rotation, or single turn
  2. 7. a kind of star formation
  3. 9. occurs when light from the sun is cut off
  4. 10. dust that orbits the sun
  5. 11. the turning of earth
  6. 12. a ship that used to be used for space travel
  7. 15. milky
  8. 17. a branch of science that deals with space
  9. 19. the path a planet travels around the sun
  10. 20. small rocky objects that orbit the sun
Down
  1. 1. relating to the heavens or skies
  2. 2. magnified objects to close distances
  3. 4. earth, space, and all things in it
  4. 5. a measure of distance in space
  5. 6. shooting stars
  6. 8. straight line around which earth turns
  7. 13. having to do with the moon
  8. 14. a man-made object that orbits earth
  9. 16. movement, something that moves
  10. 18. having to do with the sun