![Galaxia de canto UGC11859 y GTC-1 Galaxia de canto UGC11859 y GTC-1](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/media/image/UGC11859.png?h=0e1ad95a&itok=yRHHekST)
An international scientific team, including the Instituto de Astrofísica de Canarias (IAC), has detected distortions in the brightness of a galaxy's disc that could be explained by the gravitational effect of an unknown neighbouring galaxy. Named GTC-1, the satellite galaxy was discovered using ultra-deep images obtained with the OSIRIS camera of the Gran Telescopio Canarias, located at the Roque de los Muchachos Observatory in La Palma. The finding provides a possible explanation for a puzzle about way the light fades out at the edges of galaxy disks, a mystery that has bothered the
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