Billionaire Jared Isaacman and SpaceX engineer Sarah Gillis completed the first privately funded spacewalk Thursday — a critical aspect of a risky, somewhat troubled mission designed to test new ...

On July 25, 1984, the Russian cosmonaut Svetlana Savitskaya became the first woman to embark on a spacewalk, also known as an ...

The Polaris Dawn crew Jared Isaacman, Scott "Kidd" Poteet, Sarah Gillis and Anna Menon explain the experiments conducted ...

An overnight "debris notification" prompted NASA to delay the spacewalk. It wasn't immediately clear if the alert was linked to a recent Russian weapon test that unleashed a cloud of debris.

A tech billionaire performed the first private spacewalk hundreds of miles above Earth on Thursday, a high-risk endeavor reserved for professional astronauts — until now.Tech entrepreneur Jared ...

During his second spacewalk, his suit's cooling system failed, and his helmet started to fill with water. PARMITANO: It covered my eyes, it covered my ears, and it went inside my nose.

The spacewalk is part of the Polaris Dawn mission—a five-day commercial mission to push the limits of commercial space travel exponentially. The event is set to take place on the crew’s third ...

Thursday's shortened spacewalk sparks questions about flight safety rules and international communication in space station operations. Analysis by NBC's James Oberg.

NASA astronaut Nichole Ayers photographed a rare atmospheric phenomenon over the US and Mexico known as a "sprite" that's ...