Across
- 4. Only moon in the solar system with a thick atmosphere
- 5. Closest planet to the sun
- 7. A cold, blue planet
- 8. Has the largest rings of any planet
- 10. Sometimes called "Earth's Twin"
Down
- 1. Jupiter's largest moon
- 2. More than 95 percent carbon dioxide
- 3. Largest planet
- 4. A group of canyons circle this moon
- 6. Has a "Goldilocks" condition-just right
- 9. A chunk of rock or metal smaller than an asteroid
- 11. Rotates on its axis at an angle of about 90 degrees