| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best space opera series books | 0.97 | 0.7 | 2718 | 49 |
| best free audible space opera series books | 1.18 | 0.8 | 7599 | 42 |
| best new space opera books | 1.11 | 0.4 | 613 | 41 |
| best space opera science fiction books | 1.43 | 0.7 | 8716 | 64 |
| space opera book series | 1.56 | 0.7 | 1107 | 98 |
| good space opera books | 1.66 | 0.9 | 1079 | 3 |
| best space opera novels of all time | 1.47 | 0.8 | 54 | 48 |
| best sci-fi book series with space opera | 0.84 | 0.5 | 7614 | 76 |
| amazon space opera books | 1.08 | 1 | 7089 | 56 |
| best space opera books 2023 | 1.38 | 1 | 8936 | 92 |
| great space opera novels | 1.94 | 0.4 | 2535 | 11 |
| best space opera books reddit | 1.15 | 0.8 | 5736 | 34 |
| free space opera books | 1.52 | 0.4 | 4881 | 78 |
| best space opera audiobooks | 0.71 | 0.6 | 1129 | 84 |
| greatest space opera science fiction novels | 0.73 | 1 | 5933 | 23 |
| new space opera novels | 0.05 | 0.2 | 8713 | 20 |
