| Acronym | Meaning |
 | MACS | Modular Attitude Control System |
| ICE | International Cometary Explorer |
| PN | Planetary Nebula |
| GRTLS | Glide RTLS |
| OTV | Orbital Transfer Vehicle |
| USA/RC | Universities Space Automation/Robotics Consortium |
| WSMR | White Sands Missile Range |
| IMO | International Meteor Organization |
| NORAD | NORth American Aerospace Defense |
| WUPPE | Wisconsin Ultraviolet PhotoPolarimter Experiment |
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