| Similarity | Rank | |
|---|---|---|
| infrared | 0.847 | 15105 |
| iue | 0.844 | 78584 |
| gamma-ray | 0.825 | 42486 |
| yohkoh | 0.819 | 87506 |
| rosat | 0.805 | 51261 |
| earth-based | 0.805 | 76197 |
| meteosat | 0.795 | 88109 |
| cobe | 0.791 | 50877 |
| psr1706-44 | 0.782 | 59335 |
| nebulæ | 0.777 | 66546 |
| long-period | 0.775 | 72165 |
| orbiter | 0.775 | 56682 |
| ftir | 0.774 | 81802 |
| imager | 0.772 | 67698 |
| interferometer | 0.771 | 44376 |
| magnetosphere | 0.769 | 35041 |
| skylab | 0.767 | 77269 |
| exosat | 0.766 | 66902 |
| interstellar | 0.762 | 28702 |
| photometric | 0.762 | 73444 |
| radio-telescope | 0.761 | 91134 |
| spectroscopic | 0.760 | 51095 |
| spectrometer | 0.758 | 24617 |
| monopole | 0.756 | 42280 |
| cometary | 0.756 | 75327 |