German astronaut Alexander Gerst from the European Space Agency during a fit check of his spacesuit inside the Quest Airlock September 17, 2018 in Earth Orbit.

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Keywords: 57, agency, airlock, alexander, astronaut, check, cosmonaut, crew, earth, esa, european, eva, expedition, fit, german, gerst, horizontal, international, iss, nasa, orbit, quest, science, space, spacecraft, spaceship, spacesuit, station, technology, testing