Ronan's Moon Crossword

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Across
  1. 3. The force that pulls objects toward each other.
  2. 5. When the moon is fully illuminated.
  3. 7. An instrument for observing distant objects.
  4. 8. Another term for the moon.
  5. 10. Rise and fall of sea levels.
  6. 13. The absence of sunlight.
  7. 14. Earth's natural satellite.
  8. 17. The gases surrounding a celestial body.
  9. 19. A scientist who studies celestial bodies.
  10. 20. The final frontier.
  11. 25. A famous physicist known for his laws of motion and gravity.
  12. 26. The red planet.
  13. 27. Our home planet.
  14. 28. When the moon appears to increase in size.
Down
  1. 1. The shape of the moon during some phases.
  2. 2. Another gas giant known for its rings.
  3. 4. The distant blue planet.
  4. 6. The seventh planet from the sun.
  5. 9. The first man to walk on the moon.
  6. 11. A gas giant in our solar system.
  7. 12. A bowl-shaped depression on the moon's surface.
  8. 14. Space rocks that burn up in our atmosphere.
  9. 15. One-fourth.
  10. 16. A famous space program that landed humans on the moon.
  11. 18. The path a celestial object takes around another object in space.
  12. 21. When the moon appears to decrease in size.
  13. 22. Related to the moon.
  14. 23. The side of a celestial body that's visible.
  15. 24. American space agency.
  16. 29. Fresh.