.@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

From outer space to inner eye – accurate lenses thanks to @Space_Station research instruments #technology https://t.co/jBXrBCHnI7 pic.twitter.com/6IRAnI5J73 — ESA (@esa) December 22, 2016

Our year through the lens – a selection of our favourite images for #2016. Full gallery: https://t.co/NBm7N4ZSPB pic.twitter.com/4xiIVHSmyU — ESA (@esa) December 22, 2016

Good morning! https://t.co/GOptrxbvFS — ESA (@esa) December 22, 2016

#OTD 22 December 2011 #Romania becomes 19th #ESA Member State @rospaceagency @esa_romania https://t.co/8Rm6UYaZze pic.twitter.com/qIMVLCiLdZ — ESA space history (@ESA_History) December 22, 2016

So many pictures that I didn't manage to post from space – here's a cracker of a sunset from back in June. #GoodnightEarth pic.twitter.com/Z2tMiKckxR — Tim Peake (@astro_timpeake) December 21, […]

#Ariane5's seventh launch this year – delivering two telecom satellites into their planned orbits https://t.co/A8VSJDDRow pic.twitter.com/mW5kwypmDf — ESA (@esa) December 21, 2016

Separation of the JCSAT-15 satellite is confirmed! pic.twitter.com/khEt7svyxC — Stéphane Israël (@arianespaceceo) December 21, 2016

Separation of the Star One D1 satellite is confirmed! pic.twitter.com/yMMSgGhHcl — Stéphane Israël (@arianespaceceo) December 21, 2016