1st @esa Iris Precursor flight trials using #SwiftBroadbandSafety paves way for the modernisation of ATM over Europe https://t.co/HAf3jC3vF4 pic.twitter.com/jql3OR5CWx — Inmarsat (@InmarsatGlobal) December 20, 2016

Preparing for #airtraffic control via satellite https://t.co/5NgiTyJuJY pic.twitter.com/ub4fxqcjIN — ESA (@esa) December 20, 2016

#Sentinel2 reveals agricultural changes in Spain’s Brazo de Este natural park and around Los Palacios y Villafranca https://t.co/Hfo6t41cAl pic.twitter.com/fehbHuiKHR — ESA EarthObservation (@ESA_EO) December 20, 2016

Egypt and the Sinai desert with the clouds staying in the north https://t.co/4PCdEc2jax #Proxima pic.twitter.com/er1QSNWIie — Thomas Pesquet (@Thom_astro) December 20, 2016

@alban_s @syl20dupuis Welcome to ESRIN — ESA (@esa) December 20, 2016

Video highlights of 2016 – an incredible year for Europe in space https://t.co/od6G5WxvuP — ESA (@esa) December 20, 2016

South of Gap, the snow on the Alps seems to be spreading towards the sea https://t.co/qf2Ho3gK39 #Proxima pic.twitter.com/o8NGd5VHGM — Thomas Pesquet (@Thom_astro) December 19, 2016

These are the best space photos of 2016 https://t.co/m5dyFan6LP — TIME (@TIME) December 16, 2016

Scientists discover jet stream deep below Earth’s surface with three-satellite #SwarmMission https://t.co/PWVMqyZCnz pic.twitter.com/ZffpwEeVgy — ESA EarthObservation (@ESA_EO) December 19, 2016

Space station @NASA_astronauts take thousands of photos of Earth every year. Enjoy the Top 16 Earth Images of 2016! pic.twitter.com/UaywXcovQj — Intl. Space Station (@Space_Station) December 19, 2016