| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best space opera series books | 1.22 | 0.4 | 1100 | 72 |
| best free audible space opera series books | 0.68 | 0.4 | 3622 | 68 |
| best space opera series audio books | 1.08 | 1 | 3930 | 9 |
| best new space opera books | 0.08 | 0.2 | 2403 | 87 |
| best space opera science fiction books | 0.33 | 0.5 | 7508 | 50 |
| space opera book series | 0.28 | 0.7 | 2503 | 71 |
| good space opera books | 0.2 | 0.4 | 6580 | 67 |
| best space opera novels of all time | 0.89 | 0.8 | 2351 | 63 |
| best space opera tv series | 0.16 | 0.3 | 8181 | 44 |
| best space opera audio books | 0.54 | 0.4 | 2590 | 80 |
| best sci-fi book series with space opera | 0.93 | 1 | 905 | 100 |
| amazon space opera books | 1.76 | 0.1 | 3695 | 36 |
| greatest space opera novels | 0.94 | 0.7 | 4894 | 46 |
| great space opera novels | 0.82 | 0.4 | 5832 | 8 |
| latest space opera novels | 1.53 | 0.2 | 5259 | 9 |
