| Acronym | Meaning |
 | OCST | Office Of Commercial Space Transportation |
| GTO | Geostationary Transfer Orbit |
| LEM | Lunar Excursion Module |
| OMB | Office Of Management And Budget |
| BD | Bonner Durchmusterung (catalog) |
| CCDS | Centers For The Commercial Development Of Space |
| SSTO | Single Stage To Orbit |
| ISM | InterStellar Medium |
| HPFTP | High Pressure Fuel Turbopump |
| CREAM | Cosmic Radiation Effects And Activatiom Monitor |
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