| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| foundations of astrophysics ryden pdf | 1.13 | 0.3 | 7170 | 7 | 37 |
| foundations | 0.21 | 0.2 | 9500 | 39 | 11 |
| of | 1.78 | 0.5 | 1802 | 48 | 2 |
| astrophysics | 0.98 | 0.2 | 2555 | 94 | 12 |
| ryden | 0.25 | 0.8 | 733 | 63 | 5 |
| 0.97 | 0.6 | 5670 | 87 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| foundations of astrophysics ryden pdf | 1.97 | 0.8 | 5567 | 26 |
