| Acronym | Meaning |
| ATCS | Active Thermal Control System |
| CMCC | Central Mission Control Centre |
| HST | Hubble Space Telescope |
| PMIRR | Pressure Modulated InfraRed Radiometer |
| ISAS | Institute Of Space AND Astronautical Science |
| CXBR | Cosmic X-ray Background Radiation |
| ETE | End-to-End |
| DC | Delta Clipper |
| JILA | Joint Institute For Laboratory Astrophysics |
| BC | Bolometric Correction |