How a Deep Space Antenna Just 'Spoke' with Two Spacecraft at Once
The European Space Agency (ESA) is celebrating a technical achievement. For the very first time, one of its deep space antennas has simultaneously sent a series of commands to two spacecraft orbiting Mars. The antenna sent parallel transmissions to the agency’s Mars Express orbiter, which snaps pictures of the Red Planet, and its ExoMars Trace Gas Orbiter, which analyzes gas signatures on Mars.
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