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Simulation of Two Galaxy Clusters Colliding

Simulation of two galaxy clusters colliding. As the two clusters smash together, the dark matter falls to the center of the combined cluster and then back out. The dark matter moves outward, it begins to slow down under the pull of gravity and piles up, forming a "ring" of concentrated dark matter.
  • Release Date
    May 15, 2007
  • Science Release
    Hubble Finds Ring of Dark Matter
    Read the release
  • Credit
    NASA, ESA, M.J. Jee (Johns Hopkins University), and G. Bacon (STScI)

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    mp4 (505.59 KB)

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Last Updated
Mar 28, 2025
Contact
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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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