| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what comet was visible in the 90s | 1.79 | 0.5 | 5477 | 86 |
| what comet was visible in the 1990s | 1.47 | 0.5 | 5693 | 62 |
| comet in the 90s | 0.56 | 0.4 | 3545 | 17 |
| what comet was visible in the 1970s | 1.5 | 0.7 | 3923 | 49 |
| comet in the 1990s | 0.49 | 0.3 | 9963 | 78 |
| what comet was visible in 1996 | 1.81 | 0.1 | 2025 | 33 |
| famous comet of the 1990s | 0.18 | 1 | 1857 | 97 |
| what comet was visible in 1986 | 1.5 | 0.7 | 1657 | 39 |
| what comet was visible in 1997 | 1.13 | 0.6 | 4542 | 3 |
| what comet was seen in 1996 | 1.02 | 0.6 | 4360 | 100 |
| what comet is visible every 76 years | 0.88 | 0.6 | 5903 | 13 |
| what comet was last seen in 1986 | 1.12 | 0.7 | 1390 | 87 |
| which comet appear after 76 years | 0.7 | 0.4 | 7813 | 14 |
| comets in the last 20 years | 1.71 | 0.5 | 4816 | 34 |
| comets in the last 30 years | 1.95 | 0.7 | 1645 | 6 |
| is the comet still visible | 0.83 | 0.5 | 592 | 93 |
| comets in the last 50 years | 1.03 | 0.8 | 5222 | 23 |
| comet that appeared in 1997 | 1.97 | 0.1 | 1844 | 5 |
| was there a comet today | 0.38 | 0.4 | 7459 | 10 |
| list of visible comets | 0.9 | 0.3 | 7418 | 94 |
