Galaxies Magnified by Galaxy Cluster Abell 1689's Gravitational Lens. Credit: NASA, ESA, C. Heymans (University of British Columbia, Vancouver), M. Gray (University of Nottingham, U.K.), M. Barden (Innsbruck), the STAGES collaboration, C. Wolf (Oxford University, U.K.), K. Meisenheimer (Max-Planck Institute for Astronomy, Heidelberg), and the COMBO-17 collaboration (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.