astronomy

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Across
  1. 4. the FIRST phase of the moon phase (no moon shows)
  2. 5. natural body that orbits a planet
  3. 6. the last planet from the sun in our solar system
  4. 8. the star in the center of our solar system
  5. 9. the force that holds planets in orbit
  6. 13. moon phase where half the moon shows, and it is still growing
  7. 15. first planet from the sun
  8. 16. the CATEGORY of the Milky Way Galaxy
  9. 18. the third planet from the sun
Down
  1. 1. halfway through the moon phase cycle
  2. 2. moon phase that is getting smaller, and larger than a third quarter moon
  3. 3. the outer 4 planets made of gas
  4. 7. natural body that orbits the sun
  5. 10. the study of the universe
  6. 11. the first 4 rocky planets
  7. 12. moon phase that is still growing, and larger than a first quarter moon
  8. 14. a huge collection of stars, dust, gas, and solar systems
  9. 17. moon phase where half the moon shows, but it is shrinking