article_snippet.sent: In this Hubble image, the lagging clump can be seen on the left of the central cluster.
article_snippet.sent: The distribution of dark matter in the cluster is shown with blue contour lines .
article_snippet.sent: Here, four galaxies are colliding around the centre of the cluster.
article_snippet.sent: This image from the Nasa/Esa Hubble Space Telescope shows a zoomed out view of the galaxy cluster Abell 3827, 1.3 billion light-years away.
article_snippet.sent: The strange blue structures surrounding the central galaxies are gravitationally lensed views of a much more distant galaxy behind the cluster .
article_snippet.sent: Shown is the galaxy cluster MACS J0416.1+2403 and This latest study dark matter distribution, shown in blue, based on This latest study gravitational interactions .