| Acronym | Meaning |
 | EUMETSAT | European Meterological Satellite Organisation |
| CMB | Cosmic Microwave Background |
| HTHL | Horizontal Takeoff Horizontal Landing |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| CV | Cataclysmic Variable |
| GLOMR | Global Low-Orbiting Message Relay |
| APM | Attached Pressurized Module (a.k.a. Columbus) |
| APT | Automatic Photoelectric Telescope |
| SMC | Small Magellanic Cloud |
| FRF | Flight Readiness Firing |
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