| Acronym | Meaning |
 | IPS | Inertial Pointing System |
| HST | Hubble Space Telescope |
| EUVE | Extreme UltraViolet Explorer |
| ISO | Imaging Spectrometic Observatory |
| NICMOS | Near Infrared Camera/Multi Object Spectrometer |
| CERES | Clouds And Earth's Radiant Energy System |
| ATAL | Alternate Transoceanic Abort Landing |
| OSCAR | Orbiting Satellite Carrying Amateur Radio |
| IR | InfraRed |
| APT | Automatic Photoelectric Telescope |
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