| Acronym | Meaning |
 | MTFF | Columbus Man-Tended Free-Flyer |
| VMS | Vertical Motion Simulator |
| HRSI | High-temperature Reusable Surface Insulation |
| APJ | Astrophysical Journal |
| WSMR | White Sands Missile Range |
| ENAP | Energetic Neutral Atom Precipitation |
| USMP | United States Microgravity Payload |
| OAO | Orbiting Astronomical Observatory |
| IVT | Interface Verification Test |
| MMT | Multiple Mirror Telescope |
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