![](\"http:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2019\/03\/juice_s_magnetometer_boom\/19307246-1-eng-GB\/Juice_s_magnetometer_boom_small.jpg\")
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\nA test version of the 10.5-m long magnetometer boom built for ESA\u2019s mission to Jupiter, developed by SENER<\/a> in Spain, seen being tested at ESA\u2019s Test Centre<\/a> in the Netherlands, its weight borne by balloons.\n<\/p>\n \nThe flight model will be mounted on the Juice spacecraft \u2013 Jupiter Icy Moons Explorer<\/a> \u2013 due to launch in 2022, arriving at Jupiter in 2029. The mission will spend at least three years making detailed observations of the giant gaseous planet Jupiter and three of its largest moons: Ganymede, Callisto and Europa.\n<\/p>\n \nThe Juice spacecraft will carry the most powerful remote sensing, geophysical, and in situ payload complement ever flown to the outer Solar System. Its payload consists of 10 state-of-the-art instruments.\n<\/p>\n \nThis includes a magnetometer instrument that the boom will project clear of the main body of the spacecraft, allowing it to make measurements clear of any magnetic interference. Its goal is to measure Jupiter\u2019s magnetic field, its interaction with the internal magnetic field of Ganymede, and to study subsurface oceans of the icy moons.\n<\/p>\n \nThe deployment of this qualification model boom has been performed before and after simulated launch vibration on Test Centre shaker tables to ensure it will deploy correctly in space. Since the boom will deploy in weightlessness, three helium balloons were used to help bear its weight in terrestrial gravity.<\/p>\n","protected":false},"excerpt":{"rendered":" \nA test version of the 10.5-m long magnetometer boom built for ESA’s mission to Jupiter, developed by SENER<\/a> in Spain, seen being tested at ESA’s Test Centre<\/a> in the Netherlands, its weight borne by balloons.\n<\/p>\n<\/p>\n