German astronaut Alexander Gerst of the European Space Agency floats inside the Unity module which connects the segment of the International Space Station to the Russian segment June 22, 2018 in Earth Orbit.

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Keywords: 56, agency, airlock, alexander, astronaut, european, expedition, german, gerst, horizontal, indoors, international, microgravity, module, nasa, orbit, quest, smiling, space, station, tranquility, unity, weightlessness