| Acronym | Meaning |
| PAM | Payload Assist Module |
| UDMH | Unsymmetrical DiMethyl Hydrazine |
| VTVL | Vertical Takeoff Vertical Landing |
| TWTA | Travelling Wave Tube Amplifier |
| LPO | La Palma Observatory |
| HRMS | High Resolution Microwave Survey |
| MAS | Millimeter-wave Atmospheric Sounder |
| RNGC | Revised New General Catalog |
| GR | General Relativity |
| CERES | Clouds And Earth's Radiant Energy System |