| Acronym | Meaning |
 | NRL | Naval Research Laboratory |
| LM | Lunar Module |
| MOTV | Manned Orbital Transfer Vehicle |
| MMT | Multiple Mirror Telescope |
| MOC | Mars Observer Camera |
| HPFTP | High Pressure Fuel Turbopump |
| EDRS | European Data Relay Satellite |
| GBT | Green Bank Telescope |
| DCA | Defense Communications Agency |
| OCTS | Ocean Color And Temperature Scanner |
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