| Acronym | Meaning |
 | APJ | Astrophysical Journal |
| GC | Galactic Center |
| DARPA | Defense Advanced Research Projects Agency |
| ERS | European Remote Sensing |
| VLA | Very Large Array |
| FTS | Flight Telerobotic Servicer |
| AAVSO | American Association Of Variable Star Observers |
| ETM | Enhanced Thematic Mapper |
| EUTELSAT | European Telecommunications Satellite Organization |
| UBM | Unpressurized Berthing Mechanism |
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