NASA astronauts Anne McClain and Nichole Ayers emerged around 9 a.m. Thursday, May 1 for the fifth-ever all-female spacewalk.

Two NASA astronauts plan to participate in a 6-hour, 35-minute spacewalk Thursday to upgrade the International Space Station's power generation capabilities and relocate a communications antenna.

An astronaut who missed out on the first all-female spacewalk because of a spacesuit sizing issue got her chance six years later on Thursday. Want your own personal satellite? Here’s how and what it’ll cost NASA’s Lucy spacecraft is speeding toward another close encounter with an asteroid Tatooine-like planet outside the solar system may orbit two failed stars,