| Acronym | Meaning |
 | ETM | Enhanced Thematic Mapper |
 | GAS | Get-Away Special |
 | SRM | Solid Rocket Motor |
 | ETE | End-to-End |
 | ISTS | Institute For Space And Terrestrial Science |
 | ET | Ephemeris Time |
 | NTR | Nuclear Thermal Rocket(ry) |
 | ADFRF | Ames-Dryden Flight Research Facility |
 | USA/RC | Universities Space Automation/Robotics Consortium |
 | SAMPEX | Solar Anomalous And Magnetospheric Particle EXplorer |