| Acronym | Meaning |
 | XBSS | X-ray Background Survey Spectrometer |
| OSS | Office Of Space Science (NASA) |
| NESDIS | National Environmental Satellite |
| PIFTS | Planetary Imaging Fourier Transform Spectrometer |
| NASDA | National Space Development Agency (Japan) |
| PV | PhotoVoltaic |
| CFC | ChloroFluoroCarbon |
| STEP | Satellite Technology Education Program (WSGC) |
| K | Kilo |
| NASA | National Aeronautics And Space Administration |
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