| Acronym | Meaning |
| IMU | Inertial Measurement Unit |
| ENAC | Energetic Neutral Atom Camera |
| MMS | Multi-mission Modular Spacecraft |
| GHRS | Goddard High Resolution Spectrograph |
| STDCE | Surface Tension Driven Convection Experment |
| MODIS-N | MODIS-Nadir |
| CFA | Harvard-Smithsonian Center For Astrophysics |
| ASTRO | Space Astrophysics Laboratory |
| AGB | Asymptotic Giant Branch |
| SAR | Search And Rescue / Synthetic Aperture Radar |