| Acronym | Meaning |
 | ACF | Automated Control Function |
| MPC | Minor Planets Circular |
| RTG | Radioisotope Thermoelectric Generator |
| SSRT | Single Stage Rocket Technology |
| GRS | Gamma Ray Spectrometer |
| UT | Universal Time |
| APM | Attached Pressurized Module (a.k.a. Columbus) |
| PARE | Physiological And Anatomical Rodent Experiment |
| TPCE | Tank Pressure Control Experiment |
| NRO | National Reconnaissance Office |
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