First Automated Crewless Docking Achieved

On 30/10/1967, the Soviet Union achieved the first fully automated docking between two uncrewed spacecraft when Cosmos 186 and Cosmos 188 successfully connected in Earth orbit. Both spacecraft were part of the Soyuz program and were launched separately from the Baikonur Cosmodrome, with Cosmos 186 lifting off on 27/10/1967 and Cosmos 188 on 30/10/1967. The mission was designed to test rendezvous, approach, and docking systems without human intervention. After reaching orbit, Cosmos 188 maneuvered to rendezvous with Cosmos 186 using onboard guidance and control systems. The spacecraft then performed a fully automated docking procedure, demonstrating the capability to align, approach, and physically connect in space without manual control. After docking, the two spacecraft remained connected for a period before successfully separating, completing the test sequence. This mission provided critical validation of automated rendezvous and docking technology, which later became essential for crewed missions, including Soyuz flights and operations involving space stations. The success of Cosmos 186 and 188 established procedures and systems that would be used in future orbital missions requiring spacecraft assembly, crew transfer, and resupply.