Portions of the International Space Station are pictured as the orbiting complex was flying into an orbital sunset. From front to back, are the Tranquility module, the Bigelow Expandable Activity Module (BEAM), the Progress 73 resupply ship and (at bottom) the Rassvet mini-research module. #nasa #esa #csa #jaxa #roscosmos #bigelow #beam #international #space #station #earth #tranquility #progress #rassvet #sunset