Across
- 3. sun, planets, and all the other objects that revolve around the sun
- 7. A unit of length used for distances within the solar system equal to the average distance between the earth and the sun
- 10. An object that orbits the sun and is spherical, but has not cleared the area of its orbit.
- 11. a small rocky body orbiting the sun
- 12. A natural satellite that revolves around a planet.
- 13. A meteoroid that has entered Earth's atmosphere.
- 14. The star at the center of our solar system
- 16. A ball of frozen dust and rock that orbits the sun and has a tail that glows
Down
- 1. The tendency of an object to resist a change in motion
- 2. the region around a star in which planets could potentially have surface temperatures at which liquid water could exist
- 4. The path of an object as it revolves around another object in space
- 5. A large body in space that orbits a star and does not produce light of its own
- 6. A typical star that is the source of light and heat for the planets in the solar system.
- 8. a spherical region that surrounds the solar system, that extends from the Kuiper Belt to almost halfway to the nearest star, and that contains billions of comets
- 9. the makeup of something
- 15. a region of the solar system beyond the orbit of Neptune, believed to contain many comets, asteroids, and other small bodies made largely of ice.
