The Exp 50 crew from France, Russia and U.S. heads into holidays with muscle study and Earth observations. https://t.co/XeGRzFHGMs pic.twitter.com/QkliOMubJR — Intl. Space Station (@Space_Station) December 20, 2016

Happy birthday, Melfi! This fridge has been keeping things cool on the @space_station for 10 years now. Well done @airliquidegroup! pic.twitter.com/MSJ48BmPnd — Thomas Pesquet (@Thom_astro) December 21, 2016

Winter moon – @esaoperations image of the week https://t.co/Ahld4LCi9L pic.twitter.com/dvQ4TSFE20 — ESA (@esa) December 21, 2016

Watch tonight's #Ariane5 #VA234 on @arianespace TV. The launch window opens at 20:30 UTC https://t.co/6NbQXJTXtr https://t.co/buegBrlg8C — ESA (@esa) December 21, 2016

What's cooking @Thom_astro ? https://t.co/V463A4pvyr — ESA (@esa) December 20, 2016

#Ariane5 is in the ELA-3 launch zone with both of its #VA234 passenger satellites. The launch window opens tomorrow at 20:30 UTC! pic.twitter.com/zRbFQ0MuWV — Stéphane Israël (@arianespaceceo) December 20, 2016

The launch readiness review clears #Ariane5 for liftoff! Check out the Mission Update for more Flight #VA234 info https://t.co/r01E4fQiwX — Arianespace (@Arianespace) December 19, 2016

Blogged: Faced, again, with senseless terror, we must move forward! https://t.co/j7BAk0DDmw #BerlinAttack — Jan Woerner (@janwoerner) December 20, 2016

#Xmas greetings from space by @Thom_astro @astro_kimbrough and @AstroPeggy #exp50 https://t.co/VYTdNhAL2W — ESA (@esa) December 20, 2016