Orbital maintenance docking. Illustration of a reusable crew capsule (RCC, upper left) docking with an orbital maintenance platform (OMP, lower right) in low Earth orbit. The spacecraft are passing over Denmark and southern Sweden. The RCC can support a crew of up to seven astronauts and is capable of returning independently to Earth. The OMP, designed in the style of an International Space Station (ISS) module, includes a robotic arm. The RCC is 8 metres long with solar voltaic panels (blue) spanning 15 metres. The OMP is 13.7 metres long. When docked, the combined configuration is around 21 metres in length with a diameter of 5.5 metres.