| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| explore the history and mystery of ufo | 0.44 | 0.1 | 4640 | 51 |
| explore the history and myths of ufos | 0.13 | 0.1 | 1663 | 19 |
| history of ufo sightings | 1.56 | 0.6 | 2479 | 87 |
| ufo facts and history | 0.37 | 0.3 | 5276 | 96 |
| the history of ufos | 0.91 | 0.4 | 5623 | 55 |
| the first ufo sighting | 0.14 | 0.1 | 8927 | 26 |
| history channel and ufo | 0.61 | 0.9 | 109 | 12 |
| ufo on history channel | 1.98 | 0.4 | 7734 | 79 |
| when was the first ufo discovered | 0.58 | 0.2 | 9251 | 70 |
| science museum my mystery ufo | 1.75 | 0.8 | 2657 | 52 |
| ufo investigations history channel | 1.01 | 0.8 | 4370 | 46 |
| what was the ufo | 1.12 | 1 | 4341 | 62 |
| historical ufo sightings map | 1.94 | 0.5 | 9192 | 19 |
| famous ufo sightings in history | 0.96 | 0.6 | 4207 | 3 |
| earliest ufo sighting history | 1.86 | 0.5 | 3336 | 74 |
| history channel shows ufo | 0.3 | 0.8 | 2384 | 92 |
| history channel ufo sightings | 1.33 | 1 | 3838 | 34 |
| an introduction to ufo | 0.26 | 0.7 | 5277 | 67 |
