Lighter Duty Day for Expedition 26

Expedition 26 Commander Scott Kelly performed annual maintenance on the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the International Space Station?s Tranquility module Monday.

Kelly also participated in an experiment that tests whether drugs known as biophosphonates could serve as an additional countermeasure to fend off bone density loss in long-term space travelers.

Flight Engineer Alexander Kaleri updated virus protection software on the station?s [...]

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