| Acronym | Meaning |
| HERA | Hermes Robotic Arm |
| ML | Mobile Launcher |
| HUT | Hopkins Ultraviolet Telescope |
| DSS | Deep Space Station |
| IRAS | InfraRed Astronomical Satellite |
| ISO | International Standards Organization |
| ERS | Earth Resources Satellite |
| GEODSS | Ground-based Electro-optical Deep-space Surveillance System |
| RGB | Red Giant Branch |
| LEM | Lunar Excursion Module |