This Hubble Space Telescope map shows the four clumps of dark matter in the supercluster Abell 901/902. Credit: NASA, ESA, C. Heymans (University of British Columbia), M. Gray (University of Nottingham), M. Barden (Innsbruck), STAGES collaboration.
This Hubble Space Telescope map shows the four clumps of dark matter in the supercluster Abell 901/902. Credit: NASA, ESA, C. Heymans (University of British Columbia), M. Gray (University of Nottingham), M. Barden (Innsbruck), STAGES collaboration.