Across
- 1. Closest in size to Earth
- 3. Smallest Planet
- 5. Solar System is located in _____ galaxy
- 7. Biggest Planet
- 8. Hottest Planet
- 9. 'Red Planet'
Down
- 2. Coldest Planet
- 4. Seventh planet from the Sun
- 5. Second smallest planet in the solar system
- 6. Brightest planet in the night sky