This video pans across a new NASA/ESA Hubble Space Telescope image of two galaxies from the cluster SDSS J1531+3414. The two galaxies have been found to be merging into one and a "chain" of young stellar superclusters are seen winding around the galaxies’ nuclei. The galaxies are surrounded by an egg-shaped blue ring caused by the immense gravity of the cluster bending light from other galaxies beyond it.
More information and download options: http://www.spacetelescope.org/videos/heic1414c/
NASA, ESA/Hubble and Grant Tremblay (European Southern Observatory)