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Currently the International Space Station is inhabited by Expedition 11 Russian Commander Sergei Krikalev and American Flight Engineer John Phillips. They have been manning the space station since April 16, 2005.
Mission Specialist Soichi Noguchi from Discovery traverses along the Destiny laboratory of the International Space Station. Shuttle astronauts took spacewalks to install a platforms and repair instruments on the space station.
Flight Engineer John L. Phillips works in the lab while conducting an experiment on his own body. He's wearing a pair of cycling tights outfitted with sensors that measure joints, muscle activity and foot force. Scientists hope to solve the mystery of bone and muscle loss during space flight and also better understand osteoporosis on Earth.