BONUS PUZZLE #1

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Across
  1. 3. This gas, found in the atmosphere in both Uranus and Neptune, is what causes these planets to appear the blue-ish color they are.
  2. 7. Christiaan Huygens discovered Saturn's rings as well as discovered one of its moons called ______.
  3. 9. This person discovered both Jupiter and Saturn.
  4. 10. ______ is the largest Planet in our solar system.
  5. 11. Both Uranus and Neptune are referred as ______ Giants.
  6. 12. This planet was discovered by Sir William Herschel in 1781.
Down
  1. 1. This is the direction that Uranus rotates on its axis.
  2. 2. This is the farthest planet from the sun in our solar system.
  3. 4. ________ and Helium are the 2 gasses that mostly make up the outer planets.
  4. 5. This is what the gap in Saturn's rings is called.
  5. 6. Both Jupiter and Saturn are referred as ______ Giants.
  6. 8. This planet is the only Planet in our solar system with an average density that is less than water.