| Acronym | Meaning |
 | MTC | Man Tended Capability |
| MFPE | Misson From Planet Earth |
| UPPP | Union Pour La Promotion De La Propulsion Photonique |
| VPF | Vertical Processing Facility |
| AEPI | Atmospheric Emissions Photometric Imaging |
| CDA | Command And Data Acquisition |
| NSF | National Science Foundation |
| AFGWC | Air Force Global Weather Center |
| ADS | Astrophysical Data System (at Havard-Smithsonian CfA) |
| MMU | Manned Maneuvering Unit |
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