Across
- 2. a unit of measurement equal to 149.6 million kilometers
- 6. the collection of eight planets and their moons in orbit around the sun
- 7. the planet closest to the sun and one of the hottest planets
- 8. an oval shape, which may be elongated or nearly circular
- 9. between the orbits of Mars and Jupiter, where many asteroids are found
- 10. the path of an object as it revolves around another object in space
- 13. a planet whose orbit lies outside the asteroid belt
- 14. a celestial body resembling a small planet but lacking certain technical criteria
- 15. a celestial body moving in an elliptical orbit around a star
Down
- 1. the fourth planet in order from the Sun
- 3. the planet eighth in order from the Sun
- 4. a force that moves rocks and other materials; the force that pulls objects toward each other
- 5. the name often given to the four inner planets
- 11. a planet whose orbit lies within the asteroid belt
- 12. the name often given to the first four outer planets: Jupiter, Saturn, Uranus, and Neptune