Astronomy

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Across
  1. 2. This is the first planet in order of closest to the Sun
  2. 6. When the moon appears to be shrinking
  3. 8. The amount of days it takes for Earth to revolve around the Sun
  4. 12. Tides are unusually strong
  5. 13. This is the seventh planet
  6. 15. The way the Sun rises
  7. 18. This is the fifth planet
  8. 19. This is the second planet
  9. 20. Made of gas
Down
  1. 1. This is the third planet
  2. 3. The amount of moon phases
  3. 4. The Sun is a large ball of this.
  4. 5. A dwarf planet that used to be a planet
  5. 7. This is the eighth planet
  6. 9. Equal hours of light and day
  7. 10. Made of a terrestrial surface
  8. 11. This is the fourth planet
  9. 14. Fusion The Sun's heat gets to us through this
  10. 16. This is the sixth planet
  11. 17. Tide are unusually weak
  12. 21. This is covered during a solar eclipse