Video: Argonne Scientists Simulate Collision of Galaxies, In 3-D
Bullet Cluster The Bullet Cluster consists of two colliding galaxy clusters. Dark matter, though it cannot be seen, is influencing the merger of these galaxies. NASAWatch "violent relaxation" in action This is the first picture ever taken - indirectly - of dark matter. It's one of the most famous images in modern physics, and with the help of a supercomputer, now you can watch it evolve in 3D. Scientists at the Argonne National Laboratory, the Flash Center at the University of Chicago and the Harvard-Smithsonian Center for Astrophysics used supercomputers to model the colossal forces involved in galaxy collisions just like the one above. Astrophysicists would like to know more about dark matter's role in galaxy evolution, and sophisticated computer models are helpful. They're also awesome to watch. The above image of the Bullet Cluster is actually a combination of data sets from the Chandra X-Ray Observatory, the Hubble Space Telescope...