| Acronym | Meaning |
| DRSS | DATA Relay Satellite System |
| DM | Dark Matter |
| WIMP | Weakly Interacting Massive Particle |
| OSSE | Oriented Scintillation Spectrometer Experiment |
| OARE | Orbital Acceleration Research Experiment |
| RTLS | Return To Launch Site |
| AEPI | Atmospheric Emissions Photometric Imaging |
| UFO | Unidentified Flying Object |
| APM | Atmospheric Particle Monitor |
| EPD | Energetic Particles Detector |