| Acronym | Meaning |
 | HPFTP | High Pressure Fuel Turbopump |
| VLBA | Very Long Baseline Array |
| NPOE | NPO Energiya |
| OCST | Office Of Commercial Space Transportation |
| ESTEC | European Space Research And Technology Centre |
| IGBP | International Geosphere/Biosphere Programme |
| ADS | Astrophysical Data System (at Havard-Smithsonian CfA) |
| UT | Universal Time |
| ALDP | Advanced Launch Development Program |
| SAO | Smithsonian Astrophysical Observatory |
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