| fun facts about exoplanets | 1.17 | 0.5 | 4904 | 26 | 15 |
| exoplanets that could have life | 0.58 | 0.6 | 2292 | 31 | 7 |
| what are the exoplanets | 1 | 0.4 | 8444 | 23 | 91 |
| why do exoplanets exist | 0.56 | 0.2 | 1464 | 23 | 25 |
| life on an exoplanet | 0.55 | 0.8 | 4241 | 20 | 100 |
| exoplanets in our solar system | 1.05 | 0.9 | 7989 | 30 | 29 |
| exoplanets with possibility of life | 0.23 | 0.5 | 7632 | 35 | 43 |
| number of known exoplanets | 0.84 | 0.2 | 1662 | 26 | 3 |
| are there any exoplanets like earth | 1.06 | 0.6 | 6193 | 35 | 6 |
| most earth like exoplanets | 0.27 | 1 | 5326 | 26 | 32 |
| explain what an exoplanet is | 1.24 | 0.1 | 9258 | 28 | 90 |
| what makes an exoplanet | 0.91 | 0.2 | 9545 | 23 | 25 |
| exoplanet definition and characteristics | 0.21 | 0.2 | 156 | 40 | 93 |
