| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| best space opera series | 1.29 | 0.1 | 1475 | 65 | 23 |
| best | 0.69 | 0.9 | 979 | 62 | 4 |
| space | 1.45 | 1 | 4116 | 92 | 5 |
| opera | 1.88 | 0.5 | 1311 | 85 | 5 |
| series | 0.5 | 0.9 | 4683 | 89 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best space opera series | 1.9 | 0.3 | 3051 | 29 |
| best space opera series books | 1.62 | 0.9 | 4359 | 53 |
| best space opera series audio books | 0.14 | 0.3 | 3054 | 9 |
| best space opera book series | 1.71 | 0.5 | 6998 | 12 |
| best sci-fi book series with space opera | 1.07 | 0.9 | 7693 | 87 |
| best free audible space opera series books | 1.67 | 0.5 | 2636 | 96 |
| best space opera tv series | 1.97 | 0.7 | 8560 | 72 |
| best space opera book series of all time | 1.86 | 0.7 | 7682 | 13 |
| best new space opera books | 0.85 | 0.9 | 9618 | 35 |
| best space opera science fiction books | 1.65 | 0.2 | 6087 | 38 |
| space opera book series | 1.6 | 0.1 | 5481 | 99 |
| good space opera books | 0.64 | 0.8 | 3350 | 70 |
| best space opera novels of all time | 1.18 | 0.7 | 9946 | 29 |
| best space opera audio books | 0.21 | 0.5 | 4019 | 4 |
| amazon space opera books | 1.37 | 0.2 | 2220 | 87 |
| greatest space opera novels | 1.91 | 0.8 | 1061 | 48 |
| great space opera novels | 0.93 | 0.3 | 154 | 19 |
| latest space opera novels | 1.96 | 0.1 | 4760 | 1 |
