| As a ____ orbits the Sun, its tail is blown away from the Sun. |
asteroid |
| A ____ entering the Earth's atmosphere looks like a shooting star. |
comet |
| A ____ is an interstellar cloud of dust and gas. |
meteor |
| The ____ is an area in the sky that includes 12 constellations. |
nebula |
| Proxima Centauri is the closest known ____ to the Sun. |
star |
| A ____ is an extremely bright stellar explosion. |
supernova |
| About 66 million years ago, a massive ____ hit the Earth. |
zenith |
| The point in the sky directly above you is the ____. |
zodiac |
