The Universe

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Across
  1. 3. The curved path the Moon takes around the Earth (5).
  2. 4. Santa Clause lives at the ______ pole (5).
  3. 7. The sun sets in the... (4).
  4. 8. A rock that falls to the Earth from outer space (9).
  5. 11. Our sun and the planets that move around it (11)
  6. 12. Penguins live at the ______ pole (5).
  7. 14. All of space and everything in it (8).
  8. 15. When the Moon passes into the Earth´s shadow (12).
  9. 19. The planet Venus when seen in the morning (11).
  10. 21. Objects in space with bright long tails (6).
  11. 22. THe large round things that orbit the Sun (7).
  12. 23. An Unidentified Flying Object (3).
  13. 24. How far light travels in one year (9).
  14. 25. A round ball with a map of the Earth on it (5).
  15. 27. The force that makes things fall to the ground (7).
  16. 28. A point of light in the night sky (4).
Down
  1. 1. The round silver thing in the night sky (4).
  2. 2. The mass of air surrounding the Earth (10).
  3. 5. That area beyond the Earth´s atmosphere (10).
  4. 6. What you look through to see far-away things (9).
  5. 9. The sun sets in the... (4)
  6. 10. Those machines that travel around the world (10).
  7. 11. When the Earth passes into the Moon´s shadow (12).
  8. 13. That round yellow thing in the sun at daytime (3).
  9. 16. A point in space that even gravity cannot escape from (10).
  10. 17. Little green men from another planet (6).
  11. 18. The universe considered as an ordered system (6).
  12. 20. The broad band of stars in the night sky (8).
  13. 26. Very large groups of stars that make up the universe (6).