| why are the planets orbits elliptical | 1.56 | 0.7 | 5395 | 37 | 59 |
| why do planets travel in elliptical orbits | 1.43 | 0.6 | 2323 | 42 | 37 |
| why do planets have elliptical orbits | 0.94 | 0.5 | 7101 | 37 | 6 |
| why do planets move in elliptical orbits | 1.69 | 0.4 | 3648 | 40 | 19 |
| why planets revolve in elliptical orbits | 1.26 | 0.9 | 6062 | 40 | 49 |
| the orbits of the planets are elliptical | 1.25 | 0.9 | 8535 | 40 | 76 |
| found that the planets orbits are elliptical | 1.84 | 1 | 7212 | 44 | 83 |
| elliptical orbits of planets | 0.57 | 0.4 | 7054 | 28 | 23 |
| planets have elliptical orbits | 1.44 | 0.6 | 4897 | 30 | 1 |
| why orbits are elliptical | 0.49 | 1 | 9750 | 25 | 31 |
| suggested elliptical orbits for planets | 1.12 | 0.9 | 1572 | 39 | 72 |
| why is the earth's orbit elliptical | 0.76 | 0.1 | 9438 | 35 | 47 |
| why planets orbit in ellipses | 0.12 | 0.7 | 3079 | 29 | 37 |
