This NASA Hubble Space Telescope image shows the distribution of dark matter in the center of the giant galaxy cluster Abell 1689, containing about 1,000 galaxies and trillions of stars.
NASA/ESA/D. Coe, N. Benitez (Institute of Astrophysics of Andalusia, Spain)/T. Broadhurst (Univ. of the Basque Country, Spain)/H. Ford (Johns Hopkins Univ.)