Oh yeah, I’m geeked about this news…

The strongest evidence yet for the existence of dark matter has been spotted 5 billion light-years away in the ongoing collision of two clusters of galaxies. Astronomers have detected what appears to be a vast ring of dark matter — so wide that even light would need 2.6 million years to cross it.

http://dsc.discovery.com/news/2007/05/15/darkmatter_spa.html?category=space&guid=20070515140000&dcitc=w19-502-ak-0000