Expedition 57 crew member German astronaut Alexander Gerst of the European Space Agency exhales into an ultra-sensitive gas analyzer for the Airway Monitoring experiment aboard the International Space Station June 29, 2018 in Earth Orbit.

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Keywords: 57, agency, airway, alexander, analyzer, astronaut, esa, european, expedition, experiment, gas, german, gerst, horizontal, indoors, international, laboratory, microgravity, monitoring, nasa, orbit, science, space, station, weightlessness