| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| biggest book of science and space | 1.31 | 0.1 | 4583 | 73 |
| big book of space | 1.89 | 0.9 | 7853 | 19 |
| big book of science | 1.56 | 0.4 | 9497 | 47 |
| science books about space | 1.18 | 0.9 | 1286 | 74 |
| great books about space | 0.26 | 0.3 | 7211 | 30 |
| best science fiction space books | 0.09 | 0.4 | 7369 | 41 |
| best books on space and universe | 0.52 | 0.5 | 1330 | 73 |
| books related to space science | 0.74 | 0.9 | 8889 | 2 |
| science fiction books about space | 0.3 | 0.4 | 8219 | 69 |
| best books about space | 0.14 | 0.9 | 8831 | 75 |
| best books on space and universe pdf | 1.3 | 0.8 | 8325 | 40 |
| top 10 books about space | 1.81 | 0.6 | 6024 | 55 |
| interesting facts about space book | 1.18 | 0.4 | 4592 | 73 |
| best books to read about space | 1.73 | 0.5 | 8401 | 1 |
| best fiction books about space | 1.54 | 0.1 | 730 | 87 |
