Leaky Valve on Space Station Delays Spacewalk

A suspected leaky valve on the International Space Station stalled the start of a spacewalk by Russian cosmonauts for nearly an hour today (Aug. 20), forcing them to wait in bulky spacesuits until it was deemed safe to venture outside. Veteran cosmonauts Gennady Padalka and Yuri Malenchenko were preparing to begin their space station spacewalk when the leak was detected during air pressure tests. Russian flight controllers at the station's Mission Control Center in Moscow asked the cosmonauts to stay put until the leaky valve could be isolated. More

(Source: Space.com - Aug 22)