| Acronym | Meaning |
 | UPPP | Union Pour La Promotion De La Propulsion Photonique |
| EMU | Extravehicular Mobility Unit |
| MMU | Manned Maneuvering Unit |
| CASCA | Canadian Astronomical Society |
| EGRET | Energetic Gamma Ray Experiment Telescope |
| HIRIS | High Resolution Imaging Spectrometer |
| TWTA | Travelling Wave Tube Amplifier |
| PCT | Photometric Calibration Test |
| IUE | International Ultraviolet Explorer |
| CRIM | Commercial Refrigerator Incubator Module |
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