| Acronym | Meaning |
 | AAS | American Astronautical Society |
| ESOC | European Space Operations Centre |
| GISS | Goddard Institute For Space Studies |
| HALOE | Halogen Occultation Experiment |
| CCD | Charge-Coupled Device |
| TEA | Torque Equilibrium Attitude |
| BFCS | Backup Flight Control System |
| FHST | Fixed Head Star Trackers |
| MLS | Microwave Limb Sounder |
| PAM | Payload Assist Module |
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