A commercially available 2-unit CubeSat kit provided by GomSpace Express, Aalborg, Denmark. GOMX-1 receives signals from aircraft over the ocean and also carries a camera for colour Earth observation. It was launched on 21 November 2013, from Yasny Cosmodrome, Russia. GOMX-3 is a collaboration between the European Space Agency and GomSpace, to demonstrate nanosatellite capabilities in attitude control, radio-frequency sensing, and high-speed data downlinking. It was launched on 19 August 2015, from the Tanegashima Launch Center, Japan. GOMX-4A and -4B are 6-unit CubeSats that demonstrate key technologies in handling satellite formations. They were launched on 4 February 2018, from the Jiuquan Satellite Launch Center, Japan.