| Acronym | Meaning |
 | DCA | Defense Communications Agency |
| HRSR | High-Resolution Scanning Radiometer |
| CIRRIS | Cryogenic InfraRed Radiance Instrument For Shuttle |
| CERES | Clouds And Earth's Radiant Energy System |
| VLT | Very Large Telescope |
| MACHO | MAssive Compact Halo Object |
| NASDA | NAtional Space Development Agency |
| DOT | Department Of Transportation |
| MOC | Mars Observer Camera |
| PMIRR | Pressure Modulated InfraRed Radiometer |
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