A look back at our #space week in images - from IAC to #67P: #IAC2017 #Adelaide #Greenland http://www.esa.int/Highlights/Week_In_Images_25_29_September_2017 https://twitter.com/esa/status/914045455754985472/photo/1 source: https://twitter.com/esa/status/914045455754985472