Largest dark matter ever discovered

The largest ever dark matter was discovered by a team at the University of British Comubia. The matter is said to be 270 million light years across. A new technology called "weak gravitational lensing" was used to "x-ray" the matter that reveiled the unerlying structure of the cluster.

http://www.sciencedaily.com/releases/2008/02/080221121109.htm