NASA's first all-female spacewalk takes place on Friday. Astronauts Christina Koch, an American, and Jessica Meir, a Swedish-American-Israeli, will head out on a spacewalk to replace a power controller that failed over the weekend. Koch and Meir are scheduled to exit the International Space Station on Friday, Oct. 17 at 7:50 AM ET. NASA will livestream the event on NASA Live starting at 6:50 a.m. ET that day. Gearing up for Friday's spacewalk to help the ground teams repair one of the battery channels with @Astro_Christina. . . . first spacesuit selfie, check!✔️ Photos will be much more spectacular once we pass through the hatch. Be sure to watch live: https://t.co/8ggAQFbzAh pic.twitter.com/oXUDnDvLLY — Jessica Meir (@Astro_Jessica) October 16, 2019 Earlier this week, NASA announced the spacewalk would take place on Thursday or Friday. It was initially scheduled for Monday. Originally, the first all-female spacewalk was to take place in March. It had to be postponed after properly fitting spacesuits weren't ready in time for Koch and astronaut Anne McClain. ——— ©2019 The Providence Journal - contributed to this report Distributed by Tribune Content Agency, LLC.