Across
- 4. a half of the Earth, either north or south of the Equator
- 5. An imaginary line through an object around which it spins
- 8. An imaginary line halfway between the North and South Poles
- 10. A large space rock that orbits the Sun
- 11. An event where one object in space blocks another from view
- 12. the time it takes a planet to rotate once
Down
- 1. moon Any phase when more than half of the sunlit side of the Moon can be seen
- 2. An attractive force between any two objects that have mass
- 3. planet A planet made up mostly of gases, such as hydrogen and helium
- 6. planet A planet made up mostly of icy materials
- 7. moon The phase when the sunlit side of the Moon is facing towards Earth
- 9. A group of millions or billions of stars
