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by frinxor 1073 days ago
Followed some links around, and this was interesting https://en.wikipedia.org/wiki/Abell_3266 !

"The Department of Physics at the University of Maryland, Baltimore County discovered that a large mass of gas is hurtling through the cluster at a speed of 750 km/s (466 miles/second). The mass is billions of solar masses, approximately 3 million light-years in diameter and is the largest of its kind discovered as of June 2006."