| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| first image of a comet | 1.5 | 0.3 | 6100 | 66 |
| first image of a cometary body | 0.36 | 0.8 | 5625 | 44 |
| image of a comet | 1.48 | 0.9 | 2794 | 68 |
| a picture of a comet | 1.49 | 0.8 | 3570 | 72 |
| photos of a comet | 1.47 | 0.5 | 9776 | 28 |
| show me a picture of a comet | 0.44 | 0.6 | 178 | 73 |
| first american to discover a comet | 1.77 | 0.7 | 7924 | 53 |
| when was the first comet discovered | 1.31 | 1 | 2158 | 45 |
| comet pictures and images | 1.19 | 0.1 | 3786 | 1 |
| who discovered the first comet | 0.08 | 1 | 3911 | 72 |
| printable picture of a comet | 1.33 | 0.6 | 5427 | 17 |
| comet images from earth | 1.45 | 0.3 | 5224 | 53 |
| night of the comet images | 1.55 | 0.1 | 6385 | 11 |
| what a comet is and its origins | 1.26 | 0.6 | 8209 | 64 |
| nasa photos of comets | 1.2 | 0.4 | 9599 | 52 |
| origin of the comets | 0.21 | 0.7 | 909 | 89 |
| great comets in history | 1.15 | 0.4 | 3931 | 96 |
| famous comets in history | 0.92 | 0.7 | 4289 | 17 |
