| Acronym | Meaning |
 | NTR | Nuclear Thermal Rocket(ry) |
| TPCE | Tank Pressure Control Experiment |
| UARS | Upper Atmosphere Research Satellite |
| E | Elliptical (for Galaxies) |
| CARA | Center For Astrophysical Research In Antarctica |
| IOA | Institute Of Astronomy (Cambridge) |
| CHARA | Center For High Angular Resolution Astronomy |
| OSSA | Office Of Space Science And Applications |
| MODE | Middeck Zero-Gravity Dynamics Experiment |
| WFPC | Wide Field/Planetary Camera |
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