| Acronym | Meaning |
 | SDIO | Strategic Defense Initiative Organization |
| ISEP | Isolated/Stabilized Exercise Platform |
| MODIS | Moderate Resolution Imaging Spectrometer |
| IAPPP | International Amateur/Professional Photoelectric Photometry |
| NSSDC | National Space Science Data Center |
| ET | External Tank |
| EROS | Earth Resources Observations System |
| GMS | Geostationary Meterological Satellite |
| CDA | Command And Data Acquisition |
| GSC | Guide Star Catalog |
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