Planets

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Across
  1. 2. The name of the head of a comet.
  2. 4. The speed to exit a planet's atmosphere.
  3. 8. Jovian planets have low....?
  4. 9. Which marnier reached Mars and was the first satellite to orbit another planet?
  5. 12. The star at the center of our solar system.
  6. 15. A rock that crashes into Earth.
  7. 16. Which moon is neither Terrestrial or Jovian?
  8. 17. Which belt is a ring of rocky and icy bodies at the edge of the solar system?
  9. 18. Has a "great Dark Spot".
  10. 19. This planet orbits the sun on its side.
Down
  1. 1. What is the largest moon in the solar system?
  2. 3. Which planet has the biggest temperature differential?
  3. 5. This moon has the coldest recorded temperature.
  4. 6. Something that both Saturn and Uranus have.
  5. 7. What gas makes Uranus and Neptune blue?
  6. 10. This planet has the "Great Red Spot".
  7. 11. The kind of planet that Earth and Mars are.
  8. 13. This planet is also called Earth's Twin.
  9. 14. This planet is also called the windy planet.
  10. 15. The planet known as the red planet.