| Acronym | Meaning |
 | ISO | International Standards Organization |
| TDT | Terrestrial Dynamic Time |
| MRSRM | Mars Rover And Sample Return Mission |
| AIAA | American Institute Of Aeronautics And Astronautics |
| SPOT | Systeme Probatoire Pour L'Observation De La Terre |
| SAMS | Space Acceleration Measurement System |
| NS | Neutron Star |
| HD | Henry Draper Catalog Entry |
| EURECA | European Retrievable Carrier |
| TWTA | Travelling Wave Tube Amplifier |
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