| Acronym | Meaning |
 | DMSP | Defense Meteorological Satellite Program |
| KPNO | Kitt Peak National Observatory |
| NPOE | NPO Energiya |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| OAO | Orbiting Astronomical Observatory |
| ISY | International Space Year |
| EDRS | European Data Relay Satellite |
| BNSC | British National Space Centre |
| RMS | Remote Manipulator System |
| HAO | High Altitude Observatory |
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