| Similarity | Rank | |
|---|---|---|
| gamma-ray | 0.847 | 42486 |
| iras | 0.844 | 33102 |
| earth-based | 0.843 | 76197 |
| radio-telescope | 0.835 | 91134 |
| psr1706-44 | 0.825 | 59335 |
| rosat | 0.825 | 51261 |
| exosphere | 0.818 | 87795 |
| meteosat | 0.818 | 88109 |
| yohkoh | 0.818 | 87506 |
| photometric | 0.814 | 73444 |
| cos-b | 0.813 | 84728 |
| sub-millimetre | 0.812 | 92466 |
| imager | 0.811 | 67698 |
| cobe | 0.806 | 50877 |
| long-period | 0.803 | 72165 |
| ftir | 0.802 | 81802 |
| nebulæ | 0.800 | 66546 |
| spectrograph | 0.799 | 83424 |
| arcsec | 0.794 | 70599 |
| orbiter | 0.790 | 56682 |
| pointers | 0.789 | 83957 |
| multispectral | 0.788 | 62890 |
| free-electron | 0.788 | 92646 |
| near-infrared | 0.788 | 64832 |
| synchrotron | 0.786 | 42611 |