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| English | Russian |
| ACES: Atomic Clock Ensemble in Space | космические часы на МКС (AllaR) |
| ACES: Atomic Clock Ensemble in Space | Система атомных часов в космосе (Atomic Clock Ensemble in Space (ACES) is a project led by the European Space Agency which will place ultra-stable atomic clocks on the International Space Station. Operation in the microgravity environment of the ISS will provide a stable and accurate time base for different areas of research, including general relativity and string theory tests, time and frequency metrology, and very long baseline interferometry. AllaR) |