| Acronym | Meaning |
 | E | Elliptical (for Galaxies) |
| TIG | Time Of (until) Ignition |
| RCI | Rodent Cage Interface |
| SPDM | Special Purpose Dextrous Manipulator |
| NSO | National Solar Observatory |
| PCG | Protein Crystal Growth Experiment |
| VAB | Vehicle Assembly Building |
| GOMOS | Global Ozone Monitoring By Occultation Of Stars |
| HAINS | High Accuracy Inertial Navigation System |
| EUVE | Extreme UltraViolet Explorer |
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