This motion graphic begins with a close-up of one of the galaxies, a spiral galaxy approximately the same size as the Milky Way, within the galaxy cluster known as 1E 0657-56. The view then pulls out to show over a thousand galaxies in this cluster. These immense objects are among the largest structures in the Universe.
(Credit: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.)
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