About this image
This image shows the concentration of starlight at the core of merging galaxy cluster Abell 520. The map was derived from observations by the Canada-France-Hawaii Telescope in Hawaii.
Abell 520 resides 2.4 billion light-years away.
, Dark Matter
, Galaxy Clusters
, Gravitational Lensing
, Hubble Telescope
Credit: NASA, ESA, CFHT, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University)