| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| good books about space | 1.04 | 0.5 | 7686 | 35 | 22 |
| good | 0.52 | 0.7 | 522 | 69 | 4 |
| books | 1.25 | 1 | 926 | 76 | 5 |
| about | 0.11 | 0.2 | 4978 | 85 | 5 |
| space | 0.57 | 0.6 | 381 | 89 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| good books about space | 0.33 | 0.7 | 5459 | 74 |
| good space opera books | 1.93 | 0.1 | 1207 | 58 |
| good fiction books about space | 1.33 | 0.4 | 4014 | 93 |
| interesting books about space | 1.17 | 0.8 | 1017 | 60 |
| best books about space for kids | 1.71 | 0.4 | 6445 | 15 |
| free books about space | 1.98 | 0.2 | 6531 | 25 |
| books for kids about space | 0.53 | 0.3 | 1338 | 92 |
| books related to space | 1.43 | 0.1 | 5666 | 72 |
| best space books of all time | 0.38 | 0.6 | 9339 | 77 |
| good modern space opera books | 2 | 0.6 | 4961 | 3 |
| best space opera series books | 1.16 | 0.2 | 8955 | 10 |
| best space opera books of all time | 1.44 | 0.8 | 2410 | 6 |
| best new space opera books | 0.61 | 0.4 | 3723 | 31 |
| free space opera books | 1.83 | 0.2 | 4983 | 57 |
| greatest space opera novels | 0.13 | 0.8 | 2951 | 3 |
| recent space opera books | 1.84 | 0.4 | 3828 | 56 |
| best space opera audio books | 0.33 | 0.8 | 1341 | 29 |
| best selling space opera books | 1.22 | 0.9 | 4619 | 85 |
| space opera books series | 0.45 | 0.9 | 5347 | 85 |
| best space opera series audio books | 0.48 | 0.7 | 9679 | 5 |
| the very best published space opera | 1.93 | 0.6 | 2262 | 2 |
| top space opera book series | 0.82 | 0.1 | 9917 | 65 |
| best space opera series | 0.61 | 0.9 | 5902 | 22 |
