21 March 2018
Scientists at Fraunhofer FHR in Wachtberg near Bonn have already been monitoring Tiangong 1 for a number of weeks with their TIRA (Tracking and Imaging Radar) system, one of the most powerful space observation radars in the world, supporting the German Space Situational Awareness Centre (WRLageZ) and ESA with their re-entry forecasts. ESA's space operation centre ESOC in Darmstadt has commissioned Fraunhofer FHR to determine and investigate the natural rotation of Tiangong 1. This rotation greatly influences the flight characteristics of the space lab and therefore also influences the time of impact. The space experts at FHR were able to create a spectacular animated version of radar images of Tiangong 1, showing clearly the rotation of the module.
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