| Acronym | Meaning |
| DSCS | Defense Satellite Communications System |
| TAI | International Atomic Time |
| STSDAS | Space Telescope Science Data Analysis System |
| FFT | Fast Fourier Transform |
| HALOE | Halogen Occultation Experiment |
| WUPPE | Wisconsin Ultraviolet PhotoPolarimter Experiment |
| BH | Black Hole |
| CM | Center Of Mass |
| CV | Cataclysmic Variable |
| HRSI | High-temperature Reusable Surface Insulation |