| Acronym | Meaning |
| SOFI | Spray-on Foam Insulation |
| CMB | Cosmic Microwave Background |
| VTVL | Vertical Takeoff Vertical Landing |
| BBXRT | Broad-Band X-Ray Telescope |
| STIKSCAT | Stick Scatterometer |
| NSO | National Solar Observatory |
| EUVE | Extreme UltraViolet Explorer |
| CSM | Command And Service Module |
| JD | Julian Date; Julian Day (Number) |
| WTR | Western Test Range |