| Acronym | Meaning |
| HTVL | Horizontal Takeoff Vertical Landing |
| GMS | Geostationary Meterological Satellite |
| RPM | Retro Propulsion Module |
| UGC | Uppsala General Catalog |
| ARRL | American Radio Relay League |
| SCT | Schmidt-Cassegrain Telescope |
| NIMS | Near Infrared Mapping Spectrometer |
| VLT | Very Large Telescope |
| AU | Astronomical Unit |
| ATMOS | Atmospheric Trace Molecule Spectroscopy |