Dark Matter Core Defies Explanation in Hubble Image

ABOUT THIS IMAGE:

The natural-color image of the galaxies was taken with NASA's Hubble Space Telescope and the Canada-France-Hawaii Telescope in Hawaii.

Abell 520 formed from a violent collision of massive galaxy clusters and resides 2.4 billion light-years away.

Object Name: Abell 520

Image Type: Astronomical

Credit: NASA, ESA, CFHT, and M.J. Jee (University of California, Davis)

NEWS RELEASE IMAGES

The above image is part of a montage:

Montage Image: Galaxy Cluster Abell 520 (plus CFHT, HST, CFHT/HST, and CXO overlays) Image Type: Astronomical/Annotated PRC2012-10b Galaxy Cluster Abell 520 (HST-CFHT-CXO Composite) Image Type: Astronomical Galaxy Cluster Abell 520's Luminosity (CFHT) Image Type: Astronomical Galaxy Cluster Abell 520's Hot Gas (Chandra) Image Type: Astronomical Galaxy Cluster Abell 520's Mass (HST WFPC2) Image Type: Astronomical

All images from this news release:

To access available information and downloadable versions of images in this news release, click on any of the images below: