S133-E-007866 (1 March 2011) --- NASA astronauts Scott Kelly (left), Expedition 26 commander; and Steve Lindsey, STS-133 commander, are pictured in the hatch that leads to the newly-installed Permanent Multipurpose Module (PMM) of the International Space Station while space shuttle Discovery remains docked with the station. Photo credit: NASA or National Aeronautics and Space Administration
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