Born in 1934, Alexei Leonov became the 11th Soviet cosmonaut and achieved several major milestones of space exploration.
On March 18, 1965, the Soviet spacecraft Voshkod-2 launched with two cosmonauts on board, Alexei Leonov and Pavel Belyayev.
In this photo provided by NASA, astronaut Ed White performs the United States' first spacewalk on June 3, 1965, during the Gemini 4 mission. James McDivitt / AP The world’s first spacewalker was ...
On June 3, 1965, NASA astronaut Ed White became the first American to walk in space. White left the safety of his Gemini 4 spacecraft equipped with a spacesuit, a tether and a small gas gun for ...