Dedicated to measuring changes in global sea level, the Copernicus Sentinel-6A satellite is ready to be tested in preparation for liftoff at the end of 2020. Engineers at Airbus in Friedrichshafen, Germany, have spent the last months fitting out the satellite with state-of-the-art sensors to measure the changing height of the sea surface. The satellite and is being shipped to IAGB near Munich. Here, it will spend the next six months being thoroughly tested to ensure that it will withstand the rigours of launch and the harsh environment of space during its life in orbit around Earth.