Celebration of 20 years of humans living in space

Today we celebrate 20 years of humans living in space, international collaboration, experiments & research to benefit humanity, stunning images, and so much more. As a global endeavor, over 240 people from 19 countries have visited the @iss, a unique microgravity laboratory, which has hosted more than 3,000 research investigations from scientists in over 100 nations. #SpaceStation20th #space #nasa #spacepics #iss

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