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Radio Telescope: The Mars Antenna in the Mojave Desert, California. Goldstone Deep Space Communications Complex. Standing 24 stories tall, the Mars antenna is the largest dish at Goldstone. It was originally built as a 64-meter-diameter (210-foot) antenna and received its first signal from the Mariner 4 mission to Mars. By 1988, the Mars dish, along with the 64-meter antennas in Spain and Australia, was upgraded to 70 meters (230 feet). These 70-meter antennas increase the receiving power of the Deep Space Network. (1983)