| Acronym | Meaning |
| TOPEX | Ocean Topography Experiment |
| TOMS | Total Ozone Mapping Spectrometer |
| ACRV | Astronaut Crew Rescue Vehicle |
| UTC | Coordinated Universal Time |
| TOPS | Toward Other Planetary Systems |
| LTP | Lunar Transient Phenomenon |
| CXBR | Cosmic X-ray Background Radiation |
| SSME | Space Shuttle Main Engine |
| DOT | Department Of Transportation |
| TOS | Transfer Orbit Stage |