| Acronym | Meaning |
| AGB | Asymptotic Giant Branch |
| ENAC | Energetic Neutral Atom Camera |
| ISO | Infrared Space Observatory |
| GUGK | Glavnoye Upravileniye Geodesii I Kartografii |
| NERVA | Nuclear Engine For Rocket Vehicle Application |
| MJD | Modified Julian Date |
| WFPCII | Replacement For WFPC |
| HPOTP | High Pressure Oxidizer Turbopump |
| VMF | Voenno-Morskoy Flot |
| AACS | Attitude And Articulation Control Subsystem |