| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| american space program history | 0.73 | 0.7 | 6607 | 63 | 30 |
| american | 0.76 | 0.5 | 1325 | 10 | 8 |
| space | 0.9 | 0.5 | 5571 | 71 | 5 |
| program | 0.89 | 0.6 | 8981 | 81 | 7 |
| history | 1.55 | 0.7 | 7981 | 6 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| american space program history | 0.21 | 0.1 | 8921 | 99 |
| timeline of american space program | 0.95 | 0.9 | 7665 | 41 |
| history of the space program | 0.16 | 0.3 | 4821 | 79 |
| the american space program | 1.8 | 0.3 | 9271 | 95 |
| us space program history timeline | 1.96 | 0.1 | 6044 | 47 |
| when did the us space programs start | 1.26 | 0.3 | 690 | 14 |
| what year did the space program begin | 0.88 | 0.6 | 4599 | 99 |
| when did the space program begin | 0.67 | 0.1 | 7797 | 33 |
| nasa space program history | 1.85 | 1 | 1275 | 93 |
| early space program history | 0.31 | 0.3 | 6134 | 22 |
| us space program 1960s | 1.07 | 0.5 | 9116 | 57 |
| who started the space program | 0.04 | 0.7 | 5508 | 84 |
| usa space program timeline | 0.01 | 0.6 | 134 | 7 |
| us space program 1969 | 0.96 | 1 | 7118 | 97 |
| us space program timeline | 1.2 | 0.5 | 6548 | 76 |
| united states space program | 0.53 | 0.5 | 6350 | 72 |
