Across
- 3. theory the sun and planets formed together from a cloud of gas and dust
- 5. this planet is 8.3 light minutes away from the sun
- 8. these planets are gaseous and have a low-density
- 9. a theory that our universe began with an explosion some 13.7 billion years ago
- 11. relatively small pieces of debris chipped off asteroids or comets
- 13. occur when the moon's shadow falls on part of earth
- 14. masses of water, methane, and ice(dirty snowball)
- 15. this planet is tilted 98 degrees of the orbital plane
Down
- 1. these planets are composed of high-density solid rock
- 2. this planet is most remarkable for its easily seen rings
- 4. this planet is the hottest planet
- 6. this planet has almost no atmosphere because of its small size
- 7. this planet is known as the giant of the solar system
- 10. small rocky bodies that orbit the sun
- 12. a meteoroid that strikes Earth's atmosphere