Across
- 7. dark area of the sun's surface that gives off less energy than the rest of the sun
- 8. the region between Mars and Jupiter where most asteroids orbit the sun
- 9. an envelope of gas surrounding a body in space
- 12. earth-like
- 13. a ball of ice, rock, frozen gases, and dust that orbits the sun
Down
- 1. a large body in space that orbits a star such as the sun
- 2. the amount of material that an object contains
- 3. an asteroid that enters the Earth's atmosphere
- 4. the warming of the atmosphere because of trapped heat energy from the sun
- 5. a rocky object smaller than a planet that orbits a star
- 6. a star, such as the sun, and all the bodies that revolve around it in space
- 10. a glowing ball of hot gas that makes its own energy and light
- 11. the force of attraction that exists between two objects