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China has done it with NASA China used signals sent from NASA’s Juno probe orbiting Jupiter to test the capabilities of ground stations vital to its deep space ambitions. Scientists involved in developing China’s tracking, telemetry and command (TT&C) capabilities listened-in on signals sent from Juno and successfully determined the spacecraft’s Doppler ...


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That temp ( ~ 1550 K ) looks suspiciously like the maximum Zodiacal dust grain temp before sublimation Thus the dominant thermal blackbody background Voyager is likely to ever see : " https://www.researchgate.net/figure/Dust-grain-equilibrium-temperatures-vs-distance-from-the-host-star-KIC-3542116-for_fig5_319210038 "


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