| Acronym | Meaning |
| DPSS | DATA Processing Services Subsystem |
| HTVL | Horizontal Takeoff Vertical Landing |
| NRAO | National Radio Astronomy Observatory |
| NLDP | National Launch Development Program |
| HUT | Hopkins Ultraviolet Telescope |
| MOMS | Modular Optoelectronic Multispectral/Stereo Scanner |
| EDRS | European Data Relay Satellite |
| MPEC | Multi-Purpose Experiment Canister |
| AGE | Auxiliary Ground Equipment |
| SAM | Shuttle Activation Monitor |