| Acronym | Meaning |
 | OSSA | Office Of Space Science And Applications |
| PMC | Permanently Manned Capability |
| NBS | National Bureau Of Standards |
| OTA | Optical Telescope Assembly |
| GLOMR | Global Low-Orbiting Message Relay |
| UFO | Unidentified Flying Object |
| PLB | Payload Bay |
| DSN | Deep Space Network |
| PCG | Protein Crystal Growth Experiment |
| NRSC | National Remote Sensing Centre |
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