On 18 March 1965 Soviet cosmonaut Alexei Leonov became the first person to leave a space capsule and, tethered to it, float freely in orbit – to space-walk. He was pilot of the Voskhod 2 mission ...

This is the eighth space walk of Suni Williams' career One of the two astronauts stranded at the International Space Station (ISS) has taken their first space ... for PEOPLE's free daily ...