On August 03, 2011 two Russian cosmonauts, Sergey Volkov and Aleksandr Samokutyaev performed a 6 hour and 22 minute spacewalk.
They carried out a manual launch of a mini-satellite and installed new stream video equipment on the station's outer surface.
The launch of the Kedr mini-satellite, designed to transmit greeting messages in 17 languages, Earth photos and telemetry data from its service systems, was delayed after the cosmonauts discovered that one of its two antennas was missing, but they nevertheless launched the satellite with only one antenna.
The cosmonauts also installed three containers with microorganisms and mushroom spores on the "Pirs” docking compartment to study their influence on materials used in spacecraft construction.
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