| Acronym | Meaning |
| PTC | Passive Thermal Control |
| MACS | Modular Attitude Control System |
| TEA | Torque Equilibrium Attitude |
| HIRS | High Resolution Infrared Radiation Sounder |
| NERVA | Nuclear Engine For Rocket Vehicle Application |
| ESA | European Space Agency |
| OCTW | Optical Communications Through The Shuttle Window |
| DC | Delta Clipper |
| SSBUV | Shuttle Solar Backscatter Ultraviolet Experiment |
| CSIRO | Commonwealth Scientific And Industrial Research Organization |