| Acronym | Meaning |
| H2O | Water (vapor) |
| XBSS | X-ray Background Survey Spectrometer |
| C | Centigrade |
| ESE | Earth Science Enterprise (NASA) |
| HST | Hubble Space Telescope |
| KSC | Kennedy Space Center |
| VIS5D | Visualization Of Five-Dimensional Data |
| MODIS | MODerate-resolution Imaging Spectroradiometer (EOS) |
| LASER | Light Amplification By Stimulated Emission Of Radiation |
| ERBE | Earth Radiation Budget Experiment |