| Acronym | Meaning |
 | ISM | InterStellar Medium |
| ERBE | Earth Radiation Budget Experiment |
| USMP | United States Microgravity Payload |
| SARA | Satellite Pour Astronomie Radio Amateur |
| VTHL | Vertical Takeoff Horizontal Landing |
| FAST | Fast Auroral SnapshoT Explorer |
| HPFTP | High Pressure Fuel Turbopump |
| FGS | Fine Guidance Sensors |
| PPM | Positions And Proper Motions (catalog) |
| DRSS | DATA Relay Satellite System |
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