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Spotted over NL & BE this week! https://t.co/BMdjIKBI4F — ESA (@esa) September 23, 2017

Our week in images includes hurricane #Maria, a fireball over the Netherlands and northwest #England by #Sentinel2 https://t.co/ULz8IvxbGh pic.twitter.com/SZJT0qczQ7 — ESA (@esa) September 23, 2017

Apply by Monday to be one of 25 #SpaceTweeps attending the #Sentinel5P launch #SocialSpace on 13 October! https://t.co/BAnyNzaJMi pic.twitter.com/gIvNfdO7d1 — ESA (@esa) September 23, 2017

A stunning aurora caught my eye… Its beauty is out of this world! // Una splendida aurora… Di una bellezza spaziale! #VITAmission pic.twitter.com/JRQxLNXnGT — Paolo Nespoli (@astro_paolo) September 23, 2017

A conjunction of comets is captured in this pretty star field from the morning of September 17. Discovered in July by a robotic sky survey searching for supernovae, comet C/2017 […]

New Research Fellowship opportunities @ESA out now for early career scientists & engineers: https://t.co/Q8QGA0XrSF #CareersAtESA #SpaceJobs pic.twitter.com/cuIcV7okEe — ESA Science (@esascience) September 22, 2017

VIDEO: @AstroSamantha& @Explornaut recently joined Chinese astronauts for 9 days of sea survival training https://t.co/reblQGPcp5 — ESA (@esa) September 22, 2017

Nearly 60 years ago #Sputnik became the first satellite in space, changing the world forever. ESA/@euronews report:https://t.co/cfsfQyNBwG — ESA (@esa) September 22, 2017