ESA/Hubble #Flashback: Hubble view of star-forming region S106 Credit: @ESA @NASA https://t.co/HzHhUfqwA3 pic.twitter.com/IqJXIsgnZ6 — HUBBLE (@HUBBLE_space) December 26, 2017

More from our year in images – see the full #YearInReview at: https://t.co/zvLyR7eFSB pic.twitter.com/8KEDtbOAtc — ESA (@esa) December 26, 2017

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An @esa/@NASA solar observatory saw this 'reindeer' on the Sun in 2003! 🦌 The dark area that forms the reindeer is a coronal hole — a magnetically open region on […]

#OTD 25 December 2003, Mars Express enters martian orbit, Europe’s successful 1st attempt to send a space probe into orbit around another planet… See https://t.co/bxryAFom6S pic.twitter.com/nf4ZCQ2zgt — ESA space history […]

#OTD 25 December 2004, our #Huygens probe was successfully released by the international #Cassini orbiter toward Saturn’s largest moon Titan. On 14 January 2005, Huygens would descend to its surface. […]

Sorry to hear that, try another browser? — ESA (@esa) December 25, 2017

Yes! — ESA (@esa) December 25, 2017

Merry Christmas! — ESA (@esa) December 25, 2017

Wherever you are and however you celebrate, we wish you and your family a stellar Christmas, from all of us @esa pic.twitter.com/KzlDpIHk0p — ESA (@esa) December 25, 2017