| Acronym | Meaning |
 | MACHO | MAssive Compact Halo Object |
 | ORFEUS | Orbiting And Retrievable Far And Extreme Ultraviolet Spectrometer |
 | CFA | Harvard-Smithsonian Center For Astrophysics |
 | CREAM | Cosmic Radiation Effects And Activatiom Monitor |
 | OMB | Office Of Management And Budget |
 | FPD | Flight Projects Directorate |
 | VECO | Vernier Engine Cutoff |
 | DARA | Deutsche Agentur Fuer Raumfahrtangelegenheiten |
 | RASC | Royal Astronomical Society Of Canada |
 | SST | Spectroscopic Survey Telescope / SuperSonic Transport |