Anne McClain and Nichole Ayers achieved most of their planned tasks on today's (May 1) 5-hour, 44-minute extravehicular activity.

The first spacewalk was conducted in 1965, by Russian cosmonaut Alexey Leonov. Nearly 20 years later, cosmonaut Svetlana Savitskaya became the first woman to walk in space during a solo outing in 1984.

NASA astronaut Anne McClain faced a minor scare during a historic all-female spacewalk on May 1, when she noticed a potential defect in her glove just before stepping out of the International Space Station (ISS).