By Irene Klotz CAPE CANAVERAL, Florida (Reuters) - Spacewalking cosmonauts on Friday installed two cameras outside the International Space Station for a Canadian streaming-video business but then retrieved the gear after electrical connections failed, officials said. Station commander Oleg Kotov and flight engineer Sergey Ryazanskiy left the station's Pirs airlock at 8 a.m. EST (1300 GMT) as the complex sailed 260 miles over Australia, mission commentator Rob Navias said during a NASA Television broadcast of the spacewalk. NASA astronauts Rich Mastracchio and Mike Hopkins made spacewalks on Saturday and Tuesday to replace a failed cooling pump. During the first part of Friday's planned seven-hour outing, the Russian cosmonauts set up a high-definition video camera on a swiveling platform and a medium-resolution still imager for Vancouver-based UrtheCast Corp. The Russian space agency, Roscosmos, agreed to host the cameras on the $100 billion station, a project of 15 countries, in exchange for rights to use images and video taken over Russia.{br}{br}View the Entire Article{br}