| Acronym | Meaning |
 | MVI | Microgravity Vestibular Investigation |
| HCMM | Heat Capacity Mapping Mission |
| HH | Hitchhiker |
| AGU | American Geophysical Union |
| HDM | Hot Dark Matter |
| HAO | High Altitude Observatory |
| M | Messier |
| GC | Globular Cluster |
| TIG | Time Of (until) Ignition |
| PCT | Photometric Calibration Test |
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