| Acronym | Meaning |
 | PHA | Physics And Astronomy |
| TWTA | Travelling Wave Tube Amplifier |
| STSDAS | Space Telescope Science Data Analysis System |
| VLT | Very Large Telescope |
| SAIL | Shuttle Avionics Integration Laboratory |
| COMSAT | Communications Satellite (Corporation) |
| FIRAS | Far InfraRed Absolute Spectrophotometer |
| UHF | Ultra High Frequency |
| HTVL | Horizontal Takeoff Vertical Landing |
| OTFE | Oscillatory Thermocapillary Flow Experiment |
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