Koch, Meir conclude first all-female spacewalk
Astronauts Christina Koch and Jessica Meir carried out history’s first all-female spacewalk Friday, floating outside the International Space Station and successfully installing a 230-pound replacement battery charger in the lab’s solar power system. The spacewalk began at 7:38 a.m. EDT when Koch, making her fourth excursion, and Meir, making her first, switched their spacesuits to…