| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| science fiction books about space | 1.46 | 0.4 | 1108 | 99 |
| science fiction books about space travel | 0.31 | 1 | 8322 | 71 |
| science fiction outer space books | 1.44 | 0.9 | 5215 | 8 |
| free science fiction space books | 0.15 | 0.3 | 5874 | 30 |
| best space science fiction books | 0.44 | 0.6 | 9893 | 36 |
| best space opera science fiction books | 1.73 | 0.4 | 774 | 100 |
| best space war science fiction books | 1.02 | 0.6 | 9084 | 51 |
| outer space is science fiction | 1.83 | 0.2 | 9470 | 75 |
| science fiction outer space movies | 1.29 | 0.6 | 6744 | 27 |
| books on outer space | 1.95 | 0.4 | 9503 | 96 |
| science fiction space books | 1.03 | 0.8 | 3126 | 2 |
| outer space kids books | 1.49 | 0.1 | 5039 | 77 |
