Watch 2 NASA astronauts fix ISS' huge robotic arm during June 30 spacewalk

Two NASA astronauts will fix the International Space Station's big robotic arm during a spacewalk on Tuesday (June 30), and you can watch the action live.Chris Williams and Jessica Meir will perform a roughly 6.5-hour spacewalk outside the International Space Station (ISS) today, starting at about 8:35 a.m. EDT (1235 GMT).You can watch it live via NASA; Space.com will air the stream as well, if the agency makes it available. Coverage will begin at 7:00 a.m. EDT (1100 GMT).Williams and Meir will