| Acronym | Meaning |
 | MOTV | Manned Orbital Transfer Vehicle |
| SEDS | Students For The Exploration And Development Of Space |
| M | Messier |
| ENAC | Energetic Neutral Atom Camera |
| NORAD | NORth American Aerospace Defense |
| OSC | Orbital Sciences Corporation |
| INMARSAT | International Maritime Satellite |
| JGR | Journal Of Geophysical Research |
| AFETR | USAF's ETR |
| AEPI | Atmospheric Emissions Photometric Imaging |
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