HOUSTON (NASA PR) — Two NASA astronauts will exit the station’s Quest airlock in their U.S. spacesuits on Sunday at 7:50 a.m. EDT for a six-and-half hour spacewalk. Veteran spacewalkers Christina Koch and Andrew Morgan will begin the work to install new lithium-ion batteries on the Port-6 truss structure. This will be the first of five spacewalks in October to upgrade station power systems. Televised spacewalk coverage begins Sunday at 6:30 a.m. Watch the spacewalk preview briefing that was broadcast Friday […]