Slow motion mergers in galaxy clusters provide conditions to transform spirals to smooth disks

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A group of interacting galaxies in the cluster Abell 1367.
A group of interacting galaxies in the cluster Abell 1367.

Astronomers at Liverpool John Moores University may have solved the mystery of how spiral galaxies in clusters are transformed over time into smooth disks. Results from a study of galaxy clusters confirms that the slow-motion conditions needed for the transformation are occurring among populations of galaxies falling towards the cluster centre.


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