| Similarity | Rank | |
|---|---|---|
| Ringworld | 0.807 | 99061 |
| Phobos | 0.800 | 91146 |
| Martians | 0.791 | 53763 |
| Mars | 0.783 | 7385 |
| Mars' | 0.774 | 89615 |
| interplanetary | 0.771 | 60971 |
| Earth | 0.769 | 2359 |
| Centauri | 0.754 | 51108 |
| interstellar | 0.745 | 31391 |
| Tycho | 0.740 | 68719 |
| Earths | 0.739 | 55695 |
| orbiting | 0.736 | 32947 |
| spaceship | 0.735 | 31046 |
| Earth's | 0.733 | 13759 |
| extraterrestrial | 0.725 | 39627 |
| starship | 0.725 | 41772 |
| Barsoom | 0.723 | 86728 |
| spaceships | 0.722 | 57887 |
| planets | 0.718 | 9219 |
| Gaea | 0.714 | 97160 |
| Interstellar | 0.711 | 83457 |
| Terran | 0.708 | 48991 |
| asteroids | 0.707 | 33535 |
| Planets | 0.707 | 47189 |
| Ganymede | 0.707 | 96101 |