| Similarity | Rank | |
|---|---|---|
| NASA | 0.778 | 4997 |
| at_NASA | 0.675 | 84980 |
| spacecraft | 0.628 | 12247 |
| Caltech | 0.612 | 87059 |
| orbiter | 0.596 | 92095 |
| the_International_Space_Station | 0.594 | 61329 |
| Mars | 0.579 | 6486 |
| NOAA | 0.578 | 15714 |
| ISS | 0.578 | 18099 |
| SpaceX | 0.576 | 64263 |
| space_science | 0.576 | 69787 |
| space_shuttle | 0.566 | 81402 |
| Isro | 0.563 | 97306 |
| space_station | 0.557 | 35861 |
| Hubble | 0.557 | 49607 |
| Apollo_[number] | 0.549 | 62486 |
| California_Institute_of_Technology | 0.542 | 70808 |
| USGS | 0.541 | 27036 |
| NSF | 0.539 | 15658 |
| rover | 0.539 | 31046 |
| Lockheed_Martin | 0.536 | 32194 |
| the_National_Science_Foundation | 0.534 | 29763 |
| DARPA | 0.534 | 50776 |
| Raytheon | 0.532 | 61303 |
| ESA | 0.531 | 15517 |