| Acronym | Meaning |
| MAS | Millimeter-wave Atmospheric Sounder |
| OSC | Orbital Sciences Corporation |
| RME | Radiation Monitoring Experiment |
| RGB | Red Giant Branch |
| NSO | National Solar Observatory |
| HCI | Highes Communications |
| PDRS | Payload Deployment And Retrieval System |
| KTB | Cretaceous-Tertiary Boundary |
| OTFE | Oscillatory Thermocapillary Flow Experiment |
| IRFNA | Inhibited Red Fuming Nitric Acid |