Across
- 4. Any object that orbits a planet or star
- 6. A large natural object that orbits a planet
- 8. A time of year with typical weather patterns
- 11. A ball of gas that releases light and heat
- 12. An imaginary line halfway between the North and South Poles
- 14. A large space rock that orbits the Sun
- 15. The time it takes a planet to rotate once
Down
- 1. A representation of an idea
- 2. The phase when the sunlit side of the Moon is facing towards Earth
- 3. A half of the Earth
- 5. The regular rising and falling of the sea
- 7. The motion of one object around another
- 9. A group of millions or billions of stars
- 10. An attractive force between any two objects
- 13. An imaginary line through an object