Ghostly Glow Reveals Galaxy Clusters in Collision

A team of scientists have detected long wavelength radio emissions from a colliding, massive galaxy cluster. 

The discovery implies that existing radio telescopes have missed a large population of these colliding objects. 

The discovery implies that existing radio telescopes have missed a large population of these colliding objects.

Source: http://www.sciencedaily.com/releases/2008/10/081015144157.htm