| Acronym | Meaning |
| TRMM | Tropical Rainfall Measuring Mission |
| NSO | National Solar Observatory |
| CMBR | Cosmic Microwave Background Radiation |
| GCVS | General Catalog Of Variable Stars |
| BIMDA | Bioserve-Instrumentation Technology Associate Materials Dispersion Analysis |
| SSBUV | Shuttle Solar Backscatter Ultraviolet Experiment |
| LPV | Long Period Variable |
| HMC | Halley Multicolor Camera |
| TSS | Targeted Search System / Tethered Satellite System |
| OCST | Office Of Commercial Space Transportation |