| Acronym | Meaning |
| IGY | International Geophysical Year |
| SAMPEX | Solar Anomalous And Magnetospheric Particle EXplorer |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
| USN | United States Navy |
| AMOS | Air Force Maui Optical System |
| ASTRO | Space Astrophysics Laboratory |
| CCDS | Centers For The Commercial Development Of Space |
| SPAN | Space Physics And Analysis Network |
| ENAC | Energetic Neutral Atom Camera |
| UPPP | Union Pour La Promotion De La Propulsion Photonique |