Galaxy Cluster Abell 2744

Abell 2744

A Hubble Space Telescope view of the galaxy cluster Abell 2744 is annotated in cyan and magenta to show how it acts as a ‘gravitational lens,’ magnifying more distant background galaxies. Cyan highlights the distribution of mass in the cluster, mostly in the form of dark matter. Magenta highlights the degree to which the background galaxies are magnified, which is related to the mass distribution.

Credit: STScI/NASA/CATS Team/R. Livermore (UT Austin)

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