| Acronym | Meaning |
 | TAU | Thousand Astronomical Unit |
| CIT | Circumstellar Imaging Telescope |
| SL | (Comet) Shoemaker-Levy / SpaceLab |
| SMEX | Small EXplorers |
| DOE | Department Of Education |
| GEM | Graphite Epoxy Motor |
| GR | General Relativity |
| MMCC | Mission Management And Control Centre |
| CFPA | Center For Particle Astrophysics (Berkeley) |
| SNR | Signal To Noise Ratio / SuperNova Remnant |
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