Bullet Galaxy

Bullet Galaxy, also known as the Bullet Cluster (1E 0657-56), is a pair of colliding galaxy clusters located approximately 3.8 billion light-years away from Earth in the constellation Carina. It is one of the most studied astronomical objects because it provides important insights into dark matter, the formation and evolution of galaxy clusters, and the nature of cosmic structure. The Bullet Cluster consists of two clusters that have collided at a high velocity.