Astronaut survives bad jetpack, tether during 7-hr spacewalk
NASA astronaut Joe Acaba faced several challenges during a seven-hour spacewalk outside the International Space Station on Friday. Acaba replaced a blurry camera while dealing with an unreliable jetpack and a worn out tether, replaced by station commander Randy Bresnik. This marked the third spacewalk in two weeks for the US astronauts which involved installation of a new robotic arm.