| Acronym | Meaning |
 | MACS | Modular Attitude Control System |
| BMFT | Bundesministerium Fuer Forschung Und Technologie |
| DFRC | Dryden Flight Research Center |
| STIS | Space Telescope Imaging Spectrometer |
| SEI | Space Exploration Initiative |
| IMU | Inertial Measurement Unit |
| AU | Astronomical Unit |
| AAVSO | American Association Of Variable Star Observers |
| RG | Red Giant |
| PMS | Pre-Main Sequence |
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