| Acronym | Meaning |
| IGBP | International Geosphere/Biosphere Programme |
| CASCA | Canadian Astronomical Society |
| BBXRT | Broad-Band X-Ray Telescope |
| HPOTP | High Pressure Oxidizer Turbopump |
| DPSS | DATA Processing Services Subsystem |
| DOE | Department Of The Environment |
| TDRS | Tracking And Data Relay Satellite |
| MOC | Mars Observer Camera |
| IGY | International Geophysical Year |
| CFPA | Center For Particle Astrophysics (Berkeley) |