| Acronym | Meaning |
| GRTLS | Glide RTLS |
| FRSI | Flexible Reusable Surface Insulation |
| SOCC | Satellite Operations Control Center |
| ER | Eastern Range |
| LPV | Long Period Variable |
| APM | Attached Pressurized Module (a.k.a. Columbus) |
| AFWTR | USAF's WTR |
| ERBE | Earth Radiation Budget Experiment |
| AAVSO | American Association Of Variable Star Observers |
| VAS | VISSR Atmospheric Sounder |