Pandora’s Cluster

abell-2744This image of Pandora’s Cluster, a galaxy cluster also know as Abell 2744, was taken by the Spitzer Space Telescope in infrared light. The gravity of this galaxy cluster is strong enough to act as a lens magnifying the images of more distant background galaxies. That is called gravitational lensing. The fuzzy blobs in this picture are the massive galaxies at the core of the cluster.

Image Credit: NASA

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