Across
- 3. A planet with supersonic winds that's farthest from the sun
- 5. A planet made of rock
- 6. A giant planet made of gas or ice that's stormier than previously thought
- 8. A planet that once had a thicker atmosphere
Down
- 1. A planet without moons
- 2. A giant planet made of gas that's good at catching comets
- 4. The smallest and fastest-moving planet, closest to the sun
- 7. A giant planet made of gas or ice