| Similarity | Rank | |
|---|---|---|
| rover | 0.864 | 36853 |
| lander | 0.761 | 64228 |
| spacecraft | 0.745 | 16461 |
| orbiter | 0.726 | 76092 |
| spaceships | 0.706 | 57887 |
| Orbiter | 0.701 | 76431 |
| orbiting | 0.698 | 32947 |
| astronauts | 0.697 | 24220 |
| Mars | 0.690 | 7385 |
| telescopes | 0.688 | 27127 |
| NASA's | 0.686 | 24421 |
| unmanned | 0.679 | 26624 |
| asteroids | 0.677 | 33535 |
| NASA | 0.673 | 9327 |
| interplanetary | 0.665 | 60971 |
| Curiosity | 0.664 | 34315 |
| Telescope | 0.660 | 33291 |
| flyby | 0.658 | 80846 |
| ground-based | 0.658 | 65588 |
| Astronauts | 0.658 | 92629 |
| satellites | 0.658 | 15579 |
| exoplanets | 0.654 | 89365 |
| planets | 0.651 | 9219 |
| spaceship | 0.651 | 31046 |
| Spacecraft | 0.650 | 76108 |