| Similarity | Rank | |
|---|---|---|
| NASA | 0.804 | 4997 |
| JPL | 0.675 | 94014 |
| space_shuttle | 0.616 | 81402 |
| DARPA | 0.603 | 50776 |
| space_science | 0.592 | 69787 |
| astronaut | 0.592 | 16889 |
| the_International_Space_Station | 0.591 | 61329 |
| space_exploration | 0.589 | 37186 |
| spacecraft | 0.579 | 12247 |
| SpaceX | 0.566 | 64263 |
| Apollo_[number] | 0.559 | 62486 |
| Isro | 0.554 | 97306 |
| on_Mars | 0.553 | 39049 |
| the_National_Science_Foundation | 0.552 | 29763 |
| NOAA | 0.552 | 15714 |
| space_station | 0.548 | 35861 |
| orbiter | 0.533 | 92095 |
| on_the_moon | 0.528 | 35559 |
| system_engineer | 0.528 | 82709 |
| space_travel | 0.524 | 62675 |
| the_Air_Force | 0.523 | 10097 |
| at_IBM | 0.522 | 96805 |
| at_MIT | 0.521 | 28762 |
| NSF | 0.517 | 15658 |
| astrophysics | 0.514 | 46058 |