The Bullet Cluster refers to a pair of colliding galaxy clusters, officially known as 1E 0657-56, which provides strong evidence for the existence of dark matter. This cosmic collision has created two distinct regions of mass concentration, with the visible matter (galaxies and gas) being separated from the majority of the mass, which is inferred to be dark matter. The observations from the Bullet Cluster challenge alternative theories to dark matter and demonstrate its critical role in structure formation in the universe.
congrats on reading the definition of Bullet Cluster. now let's actually learn it.