Across
- 2. TYPE OF PLANETS THAT ARE CLOSEST TO SUN AND MOST DENSE
- 5. SPINS 'BACKWARDS'
- 7. FARTHEST TERRESTRIAL PLANET FROM SUN
- 9. GIANT CLOUD OF DUST TO BEGIN SOLAR SYSTEM
- 12. CLOSEST TO THE SUN
- 14. THEORY THAT SOLAR SYSTEM DEBRIS SPUN AND FLATTENED OUT
- 15. LARGEST PLANET IN SOLAR SYSTEM
Down
- 1. TITLED EXTREMELY FAR ON ITS SIDE
- 3. THE GASEOUS PLANETS THAT ARE LESS DENSE
- 4. MAKES UP 99.8% OF SOLAR SYSTEM MASS
- 6. THEORY OF HOW PLUTO BECAME PART OF OUR SOLAR SYSTEM
- 8. SIXTH PLANET OUT FROM THE SUN
- 10. PLANET FARTHEST FROM SUN
- 11. THE PLANE THAT ALL PLANETS ARE ON
- 13. THE NAME FOR A PLANET LIKE PLUTO THAT 'CANT CLEAR ITS NEIGHBORHOOD' OF DEBRIS