| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| extra planet in solar system | 0.68 | 0.8 | 275 | 60 |
| extra planet in our solar system | 0.99 | 0.4 | 6394 | 63 |
| extra-solar planets | 1.93 | 0.8 | 6736 | 78 |
| what is an extrasolar planet | 1.47 | 0.9 | 3411 | 43 |
| extrasolar planets and planetary systems | 1.21 | 0.9 | 5529 | 54 |
| the extrasolar planets encyclopaedia | 1.55 | 0.8 | 9195 | 86 |
| extrasolar planets science daily | 1.22 | 0.7 | 5211 | 50 |
| list of extrasolar planets | 1.23 | 0.5 | 3232 | 84 |
| extrasolar planets vs exoplanets | 1.4 | 0.4 | 7970 | 100 |
| a newly discovered extrasolar planet | 1.7 | 0.7 | 7270 | 40 |
| what are extra terrestrial planets called | 0.2 | 0.8 | 9518 | 63 |
| how are extrasolar planets found | 0.29 | 0.2 | 3947 | 34 |
| extra solar system object | 1.41 | 0.1 | 6001 | 37 |
| out planets in the solar system | 0.52 | 0.6 | 7881 | 97 |
| extra planets mod wiki | 1.74 | 0.9 | 2712 | 44 |
| extrasolar planet definition astronomy | 0.44 | 0.7 | 2084 | 19 |
| list of extrasolar habitable planets | 0.26 | 0.1 | 4492 | 46 |
| the number of confirmed extrasolar planets | 1.75 | 0.1 | 99 | 82 |
