| Acronym | Meaning |
 | SSPS | Sky Survey Prototype System |
| SWLC | Salt Water Leak Check |
| ISO | Imaging Spectrometic Observatory |
| EDO | Extended Duration Orbiter |
| TSUP | Tsentr Upravileniya Polyoti |
| APT | Automatic Photoelectric Telescope |
| OTHB | Over The Horizon Backscatter |
| NASP | National AeroSpace Plane |
| FBV | Fuel Bleed Valve |
| SSPO | Space Shuttle Program Office |
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