Space

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Across
  1. 3. An imaginary pole that goes right through the Earth
  2. 6. This is no longer a planet
  3. 8. The liquid we drink
  4. 9. Also known as "Earth's twin"
  5. 11. Neil _________ first man to land on the moon
  6. 14. A scientist that studies the universe
  7. 15. Our light source in the night
Down
  1. 1. The sun sets in the ____
  2. 2. What we inhale
  3. 4. The title of this crossword
  4. 5. The biggest planet in the Solar System
  5. 7. Impossible to stand on
  6. 10. The planet we live on
  7. 12. The largest star
  8. 13. A group of stars, gas and dust