Dark matter may not be completely 'dark'

20 April 2015
Presented by Chris Smith

Abell3827.jpg

The galaxy cluster Abell 3827. The distribution of dark matter is shown with blue lines.

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Druham Universtiy's Richard Massey takes Chris Smith to a galaxy far, far away; or, more accurately, several galaxies over, which also happen to have just collided with each other, providing in the process new insights into one of the Universe's biggest enigmas, dark matter...

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