Mark your calendar! March 18, 2015 marks the 50th anniversary of the very first extra-vehicular activity (EVA) in history, which was performed by Russian cosmonaut Alexei Leonov, who briefly left Voskhod 2 while in orbit in 1965.
This was a 12 minute spacewalk. Spacesuit over-inflation made it difficult for Leonov to re-enter the Voskhod 2 capsule and faulty hatch closure contributed to an off-course reentry.
You can read a brief article about this and other EVAs that did not go as planned at the following link: