Space and the universe.

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Across
  1. 4. which planet is closet to the sun?
  2. 5. which is the biggest planet in the solar system?
  3. 7. way which galaxy is earth located in?
  4. 8. which is the closet planet to Earth?
  5. 10. how many planets are there in our solar system?
Down
  1. 1. planets further from the sun move more __
  2. 2. what is it called when the earths shadow falls on the moon?
  3. 3. and helium what are two gases that have created the sun?
  4. 6. which planet was changed to a dwarf planet in 2006?
  5. 9. which only planet has liquid water over its surface?