| Acronym | Meaning |
| IGM | InterGalactic Medium |
| SLAP | Space Link Access Protocol |
| TPS | Thermal Protection System |
| WFPC | Wide Field/Planetary Camera |
| MRSR | Mars Rover And Sample Return |
| CGRO | Compton Gamma Ray Observatory |
| EUMETSAT | European Meterological Satellite Organisation |
| SPTN | SPARTAN |
| RVSN | Raketniye Voiska Stratigcheskovo Naznacheniya |
| USA/RC | Universities Space Automation/Robotics Consortium |