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  Discovery of the Musket Ball Cluster
     
Discovery of the Musket Ball Cluster
Image credit: X-ray: NASA/CXC/UCDavis/W. Dawson et al; Optical: NASA/STScI/UCDavis/W. Dawson et al.

Uploader comment: Using a combination of powerful observatories in space and on the ground, astronomers have observed a violent collision between two galaxy clusters in which so-called normal matter has been wrenched apart from dark matter through a violent collision between two galaxy clusters. Finding another system that is further along in its evolution than the Bullet Cluster gives scientists valuable insight into a different phase of how galaxy clusters -- the largest known objects held together by gravity -- grow and change after major collisions.

   

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Waspie_Dwarf
April 13, 2012, 10:26 pm
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