| Acronym | Meaning |
 | ESOC | European Space Operations Centre |
| EODC | Earth Observation Data Centre |
| IDA | International Dark-sky Association |
| CMBR | Cosmic Microwave Background Radiation |
| LRSI | Low-temperature Reusable Surface Insulation |
| ATM | Amateur Telescope Maker |
| IOTA | Infrared-Optical Telescope Array |
| RAS | Royal Astronomical Society |
| DAC | Delayed Action Command |
| NASDA | NAtional Space Development Agency |
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