The Musket Ball Cluster (DLSCL J0916.2+2951) is a galaxy cluster that exhibits separation between its baryonic matter and dark matter components.

[4] The cluster was discovered in 2011 by the Deep Lens Survey.

[5] As of 2012, it is one of seven galaxy clusters that exhibit a separation of dark matter and baryonic matter following cluster collision and merger.

[3] The separation between the galaxies and their dark matter components is on average 19,000 light-years (5,800 pc).

[6] The galaxy cluster itself is some 8 million light-years (2.5 Mpc) across.