Two spacewalking astronauts had to make do with fewer lights and camera views from one helmet outside the International Space Station. Click the video player above for scenes from the six-hour marathon spacewalkJessica Meir and Christina Koch were just getting started on battery replacements Wednesday when Koch's helmet camera and lights came off. The astronauts couldn't get it reattached so they took it off and continued with the spacewalk. Koch later assured flight controllers that she had enough good light. Last October, Meir and Koch teamed up for the world's first all-female spacewalk.The two astronauts just started a six-hour marathon spacewalk to install lithium-ion batteries. Koch has a Carolina connection -- she is a graduate or North Carolina State University.