Merry Christmas and a Happy New Year! https://t.co/CiHU5hcG9l #christmas — Jan Woerner (@janwoerner) December 22, 2016

A day in the life of the Expedition 50 crew members as they work, perform science and share meals in space. 🚀 https://t.co/1UXoEq754H pic.twitter.com/zqOvp1gyQO — Intl. Space Station (@Space_Station) December […]

Flying over the ice in #Antarctica. @didier_schmitt arrives at the Dumont D'Urville base enroute to Concordia. #blog https://t.co/2wwediiQui pic.twitter.com/AiapWclL3s — Human Spaceflight (@esaspaceflight) December 22, 2016

.@esa_rosetta's journey around comet #67P, from arrival to mission end – now in one complete animation https://t.co/zVHa0bi1tK — ESA Science (@esascience) December 22, 2016

Terminator isn't only a movie: it’s the line between night & day. We cross it up to 16 times / 24 hours #hastalavistababy #sunsetchallenge pic.twitter.com/xmS7ZLEJwV — Thomas Pesquet (@Thom_astro) December […]

@astro_luca @ElianaMessineo @WIADpalermo You can send your request via https://t.co/BdU19dDLhp — ESA (@esa) December 22, 2016

Explore the #Moon 🌑 with our updated interactive guide #ESAmoonguidehttps://t.co/7HttuXevYO pic.twitter.com/es2K70UwIG — ESA (@esa) December 22, 2016

.@ESA_Rosetta's journey around the comet – full trajectory from arrival (31 July 2014) to mission end (30 Sept 2016) https://t.co/A8GpfuG7Jf — ESA (@esa) December 22, 2016

Training for a spacewalk self-rescue with mini jet-packs? Use #VR! @astro_kimbrough doing his "#GeorgeClooney in Gravity" impersonation #TBT pic.twitter.com/14KMZB7SBz — Thomas Pesquet (@Thom_astro) December 22, 2016