| Acronym | Meaning |
 | IRAS | InfraRed Astronomical Satellite |
| ENSO | El Nino/Southern Oscillation |
| BNSC | British National Space Centre |
| MTC | Man Tended Capability |
| DMSP | Defense Meteorological Satellite Program |
| DOT | Department Of Transportation |
| HRMS | High Resolution Microwave Survey |
| PPM | Positions And Proper Motions (catalog) |
| NSF | National Science Foundation |
| LC | Launch Complex |
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