The Advanced Camera for Surveys (ACS) aboard NASA's Hubble Space Telescope has used a natural zoom lens in space to boost its view of the distant universe. Hubble peered straight through the center of one of the most massive galaxy clusters known, called Abell 1689. NASA, N. Benitez (JHU), T. Broadhurst (The Hebrew University), H. Ford (JHU), M. Clampin(STScI), G. Hartig (STScI), G. Illingworth (UCO/Lick Observatory), the ACS Science Team and ESA
