In 1967, Kosmos 186 lifted off, an uncrewed Soyuz craft sent to test docking.

Kosmos 186 was part of the Soyuz program and lifted off from the Baikonur Cosmodrome on a Soyuz rocket. It weighed 6,530 kilograms at launch, took about 89 minutes per orbit and landed on October 31, 1967.