| Acronym | Meaning |
| RGB | Red Giant Branch |
| FOS | Faint Object Spectrograph |
| DCCS | Dynamic Cell Culture System |
| VTHL | Vertical Takeoff Horizontal Landing |
| SLAR | Side-Looking Airborne Radar |
| RFM | Reconfigurable Furnace Module |
| STC | SHAPE Technical Center |
| DM | Dark Matter |
| PCT | Photometric Calibration Test |
| ACE | Advanced Composition Explorer |