1. When a planet moves across the front of a star making it visible when it is viewed.
2. The word describing when a planet wobbles on it's axis.
3. Unable fro life to exist.
4. Blue green planet in the habitable zone
5. Equipment used to view the stars.
6. A large object that orbits a star.
7. This is the physical reason why life cannot exist because there is no liquid water.
8. One complete orbit of a planet around it's star.