Astronomy 1 Crossword

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Across
  1. 2. The name of the galaxy we live in.
  2. 4. Lots of volcanic activity which release a lot of gas.
  3. 5. The most massive planet in our solar system, but compared to Earth, it will float on water.
  4. 8. The only planet tilted on its side which makes it rotate sideways.
  5. 9. The only star in our solar system.
  6. 10. As of right now, this is the number of planets in our solar system.
  7. 12. The coldest planet with very strong winds.
  8. 13. One of this planet's moons - Titan - may make it possible to support life.
Down
  1. 1. These gas giants are farthest from the Sun.
  2. 2. The tallest mountain - Olympus Mons - is found here.
  3. 3. The shortest orbit around the Sun.
  4. 6. A celestial planet that has: Gravitational pull, mass and orbits a star.
  5. 7. This planet is 78% Nitrogen and about 20% Oxygen.
  6. 11. These rocky planets are closest to the Sun.