| Acronym | Meaning |
 | EVA | Extravehicular Activity |
| SPH | Smoothed-Particle Hydrodynamics |
| OCST | Office Of Commercial Space Transportation |
| EGRET | Energetic Gamma Ray Experiment Telescope |
| BAE | British Aerospace |
| AMSR | Advanced Microwave Sounding Radiometer |
| DAO | Dominion Astrophysical Observatory |
| WFPC | Wide Field/Planetary Camera |
| DFRF | Dryden Flight Research Facility |
| DM | Dark Matter |
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