Across
- 4. the 'red' planet. Once had liquid water, has a thin atmosphere.
- 10. the name for planets with rocky surfaces
- 12. pluto is located here, a doughnut shaped region that contains trillion of objects including comets and asteroids.
- 13. the force that attracts all objects in the universe to each other.
- 14. the center of our solar system. Has the most mass.
- 15. the gas giant with the largest ring system and many moons
Down
- 1. a gas giant that orbits on it's side at 90 degrees.
- 2. the only planet with life.
- 3. located between Mars and Jupiter, separates the inner from the outer planets
- 5. the smallest planet in the solar system
- 6. the furthest reaches of our solar system, it extends past 100,000 AU's from the sun.
- 7. the largest gas giant
- 8. a gas giant that is blue due to methane and is the furthest planet
- 9. these planets are large, outside the asteroid belt, have lots of moons and are far apart
- 11. the hottest planet due to the greenhouse effect.