| Acronym | Meaning |
| ET | Ephemeris Time |
| SETI | Search For ExtraTerrestrial Intelligence |
| INMARSAT | International Maritime Satellite |
| FIRAS | Far InfraRed Absolute Spectrophotometer |
| GOX | Gaseous OXygen |
| HRSC | High Resolution Stereo Camera |
| MBB | Messerschmitt-Belkow-Blohm |
| CERES | Clouds And Earth's Radiant Energy System |
| DARPA | Defense Advanced Research Projects Agency |
| ASP | Astronomical Society Of The Pacific |