The image offers an internal view of the Copernicus Sentinel-5P satellite. The mechanical platform consists of a hexagonal structure and three solar wings that are deployed once the satellite is in orbit. It houses the Tropomi sensor and instruments such as the optical assembly, radiant cooler and instrument control unit. Tropomi is mounted on the ‘top floor’ of the platform and positioned at an angle of 30°to ensure the instrument points towards Earth. Antennas, startrackers and radiant cooler are also mounted on the top floor. The propulsion system, which is a monopropellant hydrazine system, has a capacity of 82 kg with four 1 N thrusters in two redundant pairs. Sentinel-5P is 3.5 m high, 5.63 m across and weighs 820 kg, including fuel.