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This video shows the payload module for the Solar wind Magnetosphere Ionosphere Link Explorer (Smile)<\/a> undergoing a series of different environmental tests at both Airbus Madrid, Spain, and the European Space Research and Technology Centre (ESTEC) in Noordwijk, the Netherlands.\u00a0<\/p>\n These milestones include integration of the Soft X-ray Imager and ultraviolet instruments<\/a> on the payload module (October 2021, Airbus Madrid); preparing and completing thermal testing of the payload module (11\u201324 Jan 2022, ESA\/ESTEC); deploying the 3 m-long magnetometer boom under helium-filled balloons to simulate the weightlessness of space (27 Jan 2022, ESA\/ESTEC); vibration testing (Feb 2022, Airbus Madrid); and finally preparing the payload module for transport to China<\/a> (17 Mar, 2022).<\/p>\n The payload module has now arrived in Shanghai, China. It will now be integrated on the Smile platform, beginning in April-May 2022. Once the satellite is complete, it will be subjected to a comprehensive five-month-long\u00a0qualification test campaign including thermal, mechanical and electromagnetic compatibility testing, and\u00a0magnetic, deployment and functional tests at system level.<\/p>\n Smile is a joint mission between ESA and the Chinese Academy of Sciences (CAS), and will aim to build a more complete understanding of the Sun-Earth connection by measuring the solar wind and its dynamic interaction with the magnetosphere.<\/p>\n