On December 19, the next three inhabitants of the International Space Station will take off, joining their predecessors aboard the orbital outpost a couple days later. In this NASA profile, meet flight engineers Chris Hadfield, Roman Romanenko, and Tom Marshburn.
















































































































![A trajectory analysis that used a computational fluid dynamics approach to determine the likely position and velocity histories of the foam (Credits: NASA Ref [1] p61).](http://www.spacesafetymagazine.com/wp-content/uploads/2014/05/fluid-dynamics-trajectory-analysis-50x50.jpg)



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