| Definition | Vocabulary |
| Revolves around the Sun in the Kuiper belt and between Mars and Jupiter? | |
| The average distance between the Earth and the Sun? | |
| Large grouping of stars in space? | |
| What does NASA stand for? | |
| Process which two atoms join together and produce large amounts of energy? | |
| The study of all physical objects beyond Earth? | |
| Time it takes a planet to make one revolution? | |
| Large planets passed the main asteroid belt? | |
| The unit of measurement used within the solar system? | |
| Path a planet takes around the sun? | |
| Large cloud of dust and gas where stars are formed? | |
| Event which the shadow of the Earth falls on the moon? | |
| The theory that the universe started with a tremendous explosion? | |
| Region of the solar system past Neptune? | |
| Small, dense, rocky planets of the inner solar system? | |
| Dying star whose gravity is so strong even light can not escape? | |