Inner and Outer Planets

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Across
  1. 3. This is a nickname for the outer planets.
  2. 5. The chemical compound that makes Mars red in color.
  3. 7. All of space and everything in it.
  4. 8. He discovered Jupiter's moons.
  5. 11. An object that orbits a planet.
  6. 13. The planet with most spectacular rings.
  7. 14. The average distance between the Earth and the Sun.
  8. 16. The planet closest to the Sun.
  9. 17. The planet that was demoted to a dwarf planet.
  10. 21. A massive storm in the Jupiterian atmosphere.
  11. 23. The planet that rotates on its side.
Down
  1. 1. The type of conditions that allow life to exist on Earth.
  2. 2. The are between the inner and outer planets.
  3. 4. More that 10,000 of these can be found on Venus.
  4. 6. The planet closest in size to Earth.
  5. 7. A planet with a diameter of 51,118 kilometers.
  6. 9. This is a nickname for the inner planets.
  7. 10. The largest volcano in our solar system.
  8. 12. The largest and most massive planet.
  9. 15. Its period of revolution is longest, 163.8 Earth years.
  10. 18. A moon of Saturn that my be able to support life.
  11. 19. The planet farthest from the Sun.
  12. 20. One of Jupiter's moons.
  13. 22. The water planet.