http://en.wikipedia.org/wiki/Alexey_Leonov http://en.wikipedia.org/wiki/Alexey_Leonov >On March 18, 1965, became the first human to conduct a space walk. >At

http://en.wikipedia.org/wiki/Alexey_Leonov http://en.wikipedia.org/wiki/Alexey_Leonov >On March 18, 1965, became the first human to conduct a space walk. >At the end of the spacewalk, Leonov's spacesuit had inflated in the vacuum of space to the point where he could not re-enter the airlock. He opened a valve to allow some of the suit's pressure to bleed off, and was barely able to get back inside the capsule.