Congratulations to all International @Space_Station partners, past crew and supporters on 20 yrs of vital accomplishments in space to make life on #Earth better.@AstroSerena, #SergeyProkopyev and I feel privileged to serve on the greatest machine ever built #SpaceStation20th https://twitter.com/esa/status/1064831982272737281
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“20 memorable moments on the International @Space_Station…
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