Space Cowboys

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Across
  1. 4. super hot planet with a thick atmosphere that traps heat from the Sun
  2. 5. inner planet that is the second smallest without any atmosphere
  3. 6. this determines the day and night cycle
  4. 8. planet in which water exists in liquid, gas, and solid forms
  5. 10. fourth planet from the Sun
  6. 11. the medium sized star of our solar system
Down
  1. 1. the largest of the planets in our solar system
  2. 2. force that keeps objects in the solar system
  3. 3. rock fragments between Mars and Jupiter
  4. 7. this planet is an ice giant
  5. 9. the (______) of the Earth is what determines how much sunlight reaches the Northern and Southern hemispheres
  6. 10. the greater this is, the greater the gravity