Jupiter Energetic-particle Detector Instrument (JEDI)
NASA’s Juno spacecraft, set to arrive at Jupiter in 2016, carries three APL-built Jupiter Energetic-particle Detector Instrument (JEDI) units. Each unit weighs 15.5 pounds and uses 7 watts of power. For scale, the box that contains electronics and the sensor is approximately 9-by-5-by-5 inches; the circular “hockey puck” detector itself is 4 inches across and 1.7 inches tall.
Image Credit: The Johns Hopkins University Applied Physics Laboratory
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