galaxy cluster

Newly discovered massive galaxy cluster wins heavyweight title

"This galaxy cluster wins the heavyweight title. It's among the most massive clusters ever found at this distance," said Mark Brodwin, a Smithsonian astronomer at the Harvard-Smithsonian Center for Astrophysics.

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galaxy cluster

Chandra image of the core of the merging galaxy cluster Abell 520

This composite image from the Chandra X-ray Observatory (operated for NASA by the Smithsonian Astrophysical Observatory) shows the distribution of dark matter, galaxies, and hot […]

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galaxy cluster

Low frequency radio observations of galaxy clusters and groups / Thérèse Cantwell

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