| Acronym | Meaning |
 | PEM | Payload Electronics Module |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
| FRC | Flight Research Center |
| SRM | Solid Rocket Motor |
| GMS | Geostationary Meterological Satellite |
| ADS | Aitken Double Star Catalog |
| DOE | Department Of Education |
| SPAS | Space Pallet Satellite |
| CBR | Cosmic Background Radiation |
| AIRS | Atmospheric Infrared Sounder |
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