| Acronym | Meaning |
 | DEC | Declination |
| CATS | Cheap Access To Space |
| ELDO | European Launcher Development Organisation |
| AACS | Attitude And Articulation Control Subsystem |
| TAL | Transatlantic Abort Landing |
| PRTLS | Powered RTLS |
| SHARE | Space Station Heat Pipe Advanced Radiator Element |
| ATSR | Along Track Scanning Radiometer |
| ARC | Ames Research Center (NASA) |
| RKA | Rossiskoye Kosmicheskoye Agentsvo |
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