A merging galaxy cluster exhibiting the bullet Cluster dark-matter separation: peaks of weak gravitational lensing mass lie nearer the galaxies than the displaced X-ray gas. Combining the components supports a dominant less-collisional gravitating component under the usual gravitational model.[ref]
A direct empirical proof of the existence of dark matter by Douglas Clowe and others. Abstract and spatial comparison of the observed components
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The Bullet Cluster (1E 0657-56) is a well-known astronomical object formed by the collision of two galaxy clusters. It is located approximately 3.8 billion light-years away from Earth in the constellation Carina. The Bullet Cluster is particularly significant in astrophysics for several reasons: 1. **Collision of Galaxy Clusters**: The Bullet Cluster is one of the best examples of a merger between two large galaxy clusters.