| Acronym | Meaning |
 | AGN | Active Galactic Nucleus |
| AU | Astronomical Unit |
| FPD | Flight Projects Directorate |
| SAR | Search And Rescue / Synthetic Aperture Radar |
| APE | Auroral Photography Experiment |
| OSCAR | Orbiting Satellite Carrying Amateur Radio |
| EVA | Extravehicular Activity |
| OTA | Optical Telescope Assembly |
| BBXRT | Broad-Band X-Ray Telescope |
| PEM | Particle Environment Monitor |
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