| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how many nebulae are there in the universe | 1.77 | 1 | 8786 | 97 |
| how many nebulae are in the universe | 0.38 | 0.1 | 1041 | 4 |
| how many nebulae in the universe | 0.37 | 0.2 | 4310 | 17 |
| how many nebula are in our galaxy | 0.65 | 1 | 2706 | 27 |
| how many types of nebulae are there | 0.59 | 0.2 | 6080 | 33 |
| how many types of nebula are there | 1.46 | 0.2 | 5520 | 43 |
| how many stars are in a nebula | 1.66 | 0.6 | 1074 | 11 |
| nebulae in the universe | 0.36 | 0.4 | 1315 | 30 |
| is there more than one nebula | 0.98 | 0.8 | 6548 | 18 |
| all nebulae in space | 1.57 | 0.8 | 903 | 94 |
| list of nebulae in space | 0.64 | 0.1 | 2094 | 49 |
| pics of the universe nebulas | 0.03 | 0.7 | 3000 | 10 |
| nebula in the universe | 1.91 | 1 | 8165 | 61 |
| how large are nebulae | 0.36 | 0.5 | 4802 | 58 |
| complete list of nebulae | 0.67 | 0.3 | 1785 | 80 |
| list nebulas in space | 0.82 | 0.9 | 1137 | 87 |
| how big are nebulas | 1.61 | 0.2 | 6113 | 79 |
| how large are nebula's | 1.35 | 0.6 | 9749 | 63 |
| types of nebulae in space | 0.47 | 0.6 | 2371 | 80 |
| list of known nebulae | 1.92 | 0.8 | 1487 | 19 |
| general size of a nebula | 1.63 | 0.2 | 7503 | 78 |
