Those Puzzling Planets

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Across
  1. 4. Biggest object in our solar system.
  2. 5. Seasons on this planet last 40 Earth years.
  3. 7. Path made by something in space as it circles another object.
  4. 8. A natural satellite.
  5. 9. Planet known for its huge rings.
  6. 10. The Milky Way is one.
  7. 13. Planet mostly covered in water.
  8. 14. Planet that spins on its side.
  9. 15. Famous Canadian part of the space shuttle.
  10. 16. Made up of the Sun and planets.
Down
  1. 1. An enormous gas planet.
  2. 2. Lack of atmosphere gives this planet extreme daily temperatures.
  3. 3. These showers are named for the constellation you see them near.
  4. 6. Made by connecting the dots of stars in the sky.
  5. 11. Planet with strong acid rain.
  6. 12. The red planet.
  7. 15. Ice melts into a huge tail that streaks across the night sky.