| Acronym | Meaning |
| OSC | Orbital Sciences Corporation |
| APT | Automatic Picture Transmission |
| ORBI | Stock Ticker Symbol For OSC |
| PV | Photovoltaic |
| AGB | Asymptotic Giant Branch |
| SOFI | Spray-on Foam Insulation |
| VMS | Vertical Motion Simulator |
| RIACS | Research Institute For Advanced Computer Science |
| GAS | Get-Away Special |
| ASA | Astronomical Society Of The Atlantic |