Smiling space selfies mark first ever all-female spacewalk(1/3)

Photo released by NASA on Oct. 22, 2019, shows astronauts Christina Koch taking an out-of-this-world "space-selfie." She and fellow NASA astronaut Jessica Meir ventured into the vacuum of space for seven hours and 17 minutes to swap a failed battery charge-discharge unit (BCDU) with a spare during the first all-woman spacewalk. (Photo/NASA)

Photo released by NASA on Oct. 22, 2019, shows astronaut Jessica Meir taking an out-of-this-world "space-selfie." She and fellow NASA astronaut Christina Koch ventured into the vacuum of space for seven hours and 17 minutes to swap a failed battery charge-discharge unit (BCDU) with a spare during the first all-woman spacewalk. (Photo/NASA)

Photo released by NASA on Oct. 22, 2019, shows NASA astronaut Jessica Meir taking an out-of-this-world 'space-selfie' of herself during her first space walk.