| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when was our solar system formed | 0.82 | 0.5 | 2282 | 69 |
| how was our solar system formed | 1.75 | 0.7 | 8070 | 53 |
| how our solar system formed | 1.03 | 0.6 | 8520 | 77 |
| which objects formed last in our solar system | 1.42 | 0.6 | 7668 | 62 |
| how long ago was our solar system formed | 0.01 | 0.2 | 4174 | 47 |
| which planet formed first in our solar system | 1.99 | 0.5 | 9646 | 31 |
| 12. summarize how our solar system formed | 0.21 | 0.1 | 1155 | 11 |
| how were planets formed in our solar system | 1.28 | 0.5 | 2883 | 53 |
| first planet in our solar system | 1.78 | 0.8 | 62 | 96 |
| the 1st planet in our solar system | 0.46 | 0.6 | 664 | 90 |
| what is the first planet formed | 1.45 | 0.6 | 1029 | 24 |
| which planet do scientists think formed first | 0.08 | 1 | 8886 | 93 |
| which planet was created first | 1.07 | 1 | 9389 | 31 |
| which planet was made first | 1.57 | 0.2 | 8951 | 74 |
| what was the first planet to form | 1.73 | 0.1 | 9097 | 37 |
