| A | B |
|---|
| Axis | an imaginary line through a spinning object |
| Rotation | one full spin of an object around its 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 |
| Lunar eclipse | when the Earth comes between the sun and the moon and the Earth casts a shadow on the moon |
| Solar eclipse | When the moon comes between Earth and the sun, blocking some sunlight from the Earth |
| 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 | 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 | a frozen chunk of ice and dust that orbits the sun |
| Constellation | a group of stars that form a pattern |
