Happy #InternationalDayofHumanSpaceflight! 56 yrs after his flight, #Yuri now welcomes the visitors of the European Astronaut Centre 👩‍🚀🚀 pic.twitter.com/5Cs1rMXYqw — ESA Astronaut Centre (@ESA_EAC) April 12, 2017

It’s #InternationalDayofHumanSpaceFlight! 56 years ago today Soviet cosmonaut Yuri Gagarin was 1st human in space https://t.co/JwGHfxTikE pic.twitter.com/jcDvUcIlOb — UNOOSA (@UNOOSA) April 12, 2017

Sometimes you almost recognise countries better by night: Belgium with its illuminated roads appears yellow, Germany has bluer lights pic.twitter.com/xONmqvt7fi — Thomas Pesquet (@Thom_astro) April 11, 2017

Meet the fleet. New artist impressions of our #BepiColombo spacecraft. Gallery: https://t.co/6ndnlBjnZg pic.twitter.com/ug2YAVk62d — BepiColombo (@BepiColombo) April 12, 2017

56 years ago, Yuri Gagarin orbited the Earth on Vostok-1, and these 108 minutes changed the world! #InternationalDayofHumanSpaceFlight 🚀 https://t.co/YF4wtwHChg — ESA (@esa) April 12, 2017

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End of an era with conclusion of Expedition 50… Watch ESA's video on first 5 months of #proxima https://t.co/LuGVk1cTO4 — Thomas Pesquet (@Thom_astro) April 11, 2017

Volunteers are going to bed for #spaceflight research in latest bedrest experiment @CNES @Medes_IMPShttps://t.co/fBu8FJo8eV pic.twitter.com/1FevRGTgiH — Human Spaceflight (@esaspaceflight) April 11, 2017

A month of science on @Space_Station – and a new @ISS_Research record! #Proxima #blog https://t.co/FYF1YZfkKN pic.twitter.com/CnDoNQPPKa — Human Spaceflight (@esaspaceflight) April 11, 2017