18th March 1965: Russian astronaut Alexei Arkhipovich Leonov steps from the spaceship Voskhod 2 to become the first man to walk in outer space. (Photo by Central Press/Getty Images)
18th March 1965: Russian astronaut Alexei Arkhipovich Leonov steps from the spaceship Voskhod 2 to become the first man to walk in outer space. (Photo by Central Press/Getty Images)