The Solar System

12345678
Across
  1. 1. home to the largest mountain in our solar system
  2. 5. Mariner 10 was the first to visit this planet in 1974
  3. 6. atmosphere has oxygen
  4. 7. Axis is tilted on it's side
  5. 8. smallest gas planet
Down
  1. 2. 6th Planet from the sun
  2. 3. hottest planet
  3. 4. largest planet