Using @ESAGaia & @HUBBLE_space, astronomers have pinned down 3D motions of individual #stars in Sculptor dwarf galaxy – a satellite of our Milky Way – & traced the underlying distribution of invisible #darkmatter ➡️ https://t.co/4GRTiFLVlz
[Image credits: left @ESO; right @esa] pic.twitter.com/ScISwkybZM

— ESA Science (@esascience) November 27, 2017