Out of this World

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Across
  1. 5. A explosion which caused the creation of our solar system
  2. 8. 13 A rocket which had to reach the moon
  3. 10. An Egyptian invention which tells time
  4. 11. A gas giant which is the 2nd biggest planet
  5. 12. As far as scientist know its the only planet with life
  6. 13. A type of gas that stars commonly have
  7. 16. A unmanned space craft which travels through space
  8. 18. A group of stars that form a picture
  9. 19. An unknown object which flys in the sky
  10. 21. A spacecraft which observes the Earth
  11. 22. A moon of saturn which is the 2nd largest moon
  12. 23. Our galaxies name
  13. 24. An American Space agency
Down
  1. 1. Dark spots on the sun
  2. 2. Fastest speed ever known
  3. 3. A greek astronomer which was born on 384 BC
  4. 4. Armstrong The first man to step on the moon
  5. 6. A manned space craft which orbits a planet
  6. 7. A manned space transport which can be reused
  7. 9. A group of meteors which strie an object in space
  8. 14. A moon of Mars
  9. 15. Its a Comet which comes around Earth every 75 years
  10. 17. Planets which are smaller than normal planets
  11. 20. A hole in space which sucks everything that is nearby
  12. 21. An explosion of a star