| Acronym | Meaning |
 | USN | United States Navy |
| CATS | Cheap Access To Space |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| GGM | Goskogidromet/Gidromettsentr |
| CSM | Command And Service Module |
| DACS | DATA Acquisition And Control Subsystem |
| CFPA | Center For Particle Astrophysics (Berkeley) |
| PEM | Particle Environment Monitor |
| LHA | Local Hour Angle |
| MACS | Modular Attitude Control System |
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