Unidentified Flying Planet Crossword Puzzle

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Across
  1. 3. The border between the Terrestrials and the Jovians
  2. 5. Earth only has one, yet Venus has none.
  3. 8. Tool that Galileo used to discover the four largest moons of Jupiter
  4. 11. A diagram of this is on the front of your bifold.
  5. 14. First name of a very annoying Pluto hater
  6. 15. The gases that surround a planet
  7. 16. A bus-sized probe that visited Saturn
  8. 17. Planet named for the Roman god of the sea.
  9. 18. The largest single body in our solar system.
  10. 20. The part of a terrestrial planet that we see from the outside
  11. 21. The planet that revolves around the Sun faster than any other.
  12. 26. One complete spin, a.k.a. a day
  13. 27. Number of planets in the solar system (just don't ask Stink!)
  14. 28. Important matter found at the poles of Mars
  15. 29. The Planet Comparison is this kind of diagram
Down
  1. 1. The command on top of your Planet Composition
  2. 2. Favorite meal for a Fat Man from Space
  3. 4. The identity of Pluto, Ceres, Eris, etc.
  4. 6. Where people can quickly see the most important information about your planet
  5. 7. The hottest planet in the solar system.
  6. 9. This layer of terrestrial players has magma on Earth
  7. 10. The center of a planet
  8. 12. A red planet named for the Roman god of war.
  9. 13. The coldest planet in the solar system
  10. 18. Part of the body that helped William hear the Fat Men from Space
  11. 19. The planet that is the "mostest closest" to the Earth at any given time
  12. 22. A sudden change, or one trip around the sun.
  13. 23. The surfaces of Mercury and the Moon are covered in these large holes
  14. 24. What something is made out of, like your planet.
  15. 25. Pieces of jewelry, or things found on every Jovian planet in our solar system.