| A | B |
| predict | tell what will happen next based on what has already happened |
| axis | imaginary line through a spinning object |
| rotation | one full spin of an object around an axis |
| orbit | the path of an object around another object |
| revolution | the movement of an object around another object |
| satellite | an object that revolves around another object |
| solar system | the sun, the nine planets and their moons, and other objects that orbit the sun |
| ellipse | the shape of a flattened circle |
| asteroid | a rocky object orbiting the sun between the planets |
| meteor | piece of rock or dust from space burning up in Earth's air |
| meteorite | a rock from space that has passed through Earth's air and landed on the ground |
| comet | frozen chunk of ice and dust that orbits the sun |
| constellation | group of stars that form a pattern |