Magnetic cleaning

Technology CubeSat GomX-4B undergoing 'degaussing' – or reducing the magnetic fields of its component parts by applying an opposite magnetic field to it – with at ESA's Magnetic Coil Facility at its technical centre in the Netherlands. Such a magnetic cleaning procedure is needed to optimise the performance of the 'magnetotorquers' the nanosatellite will use for attitude control, with electromagnets reacting to Earth's magnetic field.