Across
- 2. The sun is a large ball of this.
- 6. They give off heat and light.
- 7. The curved path of a planet around the sun.
- 8. The solar system is made up of the sun and nine __________.
- 9. All the planets are held in orbit by this force.
- 10. The force of gravity between the Earth and the moon causes these.
Down
- 1. Ursa Major is an example of this.
- 3. The imaginary line that goes through the Earth.
- 4. Different views of the moon are called this.
- 5. A small object in orbit around a planet.