| Acronym | Meaning |
| CSM | Command And Service Module |
| OTA | Optical Telescope Assembly |
| DSO | Detailed Supplementary Objective |
| VRM | Venus Radar Mapper |
| SB | Spiral |
| SRM | Solid Rocket Motor |
| ACRV | Astronaut Crew Rescue Vehicle |
| HIRIS | High Resolution Imaging Spectrometer |
| SPAN | Space Physics And Analysis Network |
| AVHRR | Advanced Very High Resolution Radiometer |