Soyuz: the Soviet marvel that remains on duty after 50 years

Despite its rough start and legendary cramped quarters, the Soyuz capsule is one of the most enduring pieces of Soviet technology the world still uses.

For all the chutzpah and arrogance of most space engineers, the world's space explorations still depend critically on a Soviet piece of technology from 1967: the Soyuz capsule.

It has outlived all of its competitors, and even played a surprising role in the middle of the Cold War. Check out the video to learn more details of this engineering feat.

On the 100th anniversary of the Russian Revolution, BBC Future is running a series about the influence of the Soviet Union in science and technology, so stay tuned for more videos this week.

Join 800,000+ Future fans by liking us on Facebook, or follow us on Twitter.

If you liked this story, sign up for the weekly bbc.com features newsletter, called “If You Only Read 6 Things This Week”. A handpicked selection of stories from BBC Future, Earth, Culture, Capital, and Travel, delivered to your inbox every Friday.