Six panels of images of galaxy clusters. Each cluster has a pink and blue glow that maps the distribution of stars and dark matter (blue) and the presence of X-ray emission from impacted gas (pink).

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Here are images of six different galaxy clusters taken with NASA's Hubble Space Telescope (blue) and Chandra X-ray Observatory (pink) in a study of how dark matter in clusters of galaxies behaves when the clusters collide. A total of 72 large cluster collisions were studied.

Credits: NASA and ESA