| A | B |
|---|
| Axis | Imaginary line that passes through the south and north pole of Earth |
| Rotation | Earth spinning on its axis |
| Revolution | The movement of Earth around the sun |
| Force | A push or a pull |
| Gravity | A force that pulls all objects toward each other |
| Sunspots | Dark areas of gas on the surface of the sun |
| Solar Flares | Eruptions on the sun's surface |
| Core | Central region of the sun's interior |
| Gas Giants | Another name for the outer planets |
| Mercury | Planet closest to the sun |
| Neptune | Planet farthest from the sun |
| Orbit | The path an object takes around the sun |
| Astronomy | The study of stars, moon and stars in space |
| Full Moon | Occurs when the moon is entirely lit up |
| Earth | Only planet with known life |
| Jupiter | This planet has the Great Red Spot |
| Comet | A collection of ice, dust and rock. |
| Asteroid | Rocky objects in space |
| Terresterial Planets | Another name for the inner planets |
| Venus | This planet is known as "Earth's twin" |
