Preview of Two Upcoming Spacewalks at the International Space Station

Tune in on Wed., June 24 at 2 p.m. EDT to learn about two upcoming spacewalks to begin the replacement of batteries for one of the space station s power channels, as well as the latest on the SpaceX Dragon Endeavour s mission to the orbiting laboratory.  On Fri., June 26 and Wed., July 1, NASA astronauts Chris Cassidy and Robert Behnken will exit the station s Quest airlock to replace aging nickel-hydrogen batteries for one of two power channels on the far starboard truss with new lithium-ion batteries that arrived on a Japanese cargo spacecraft last month. The spacewalks will begin at around 7:35 a.m., and will last as long as seven hours.