Image of the Week - Elegance of darkness |
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What you see is the collision of two galaxies over billions of years, albeit virtually. As physicists at CERN investigate the smallest particles in the universe, US scientists are studying the behavior of the largest cosmic structures in existence. A team at the University of Chicago Flash Center and the Harvard-Smithsonian Center for Astrophysics used an Argonne National Laboratory Supercomputer to identify elusive dark matter. The researchers simulated the motion and collision of galactic clusters — some of the largest structures in the universe — to infer dark matter’s influence, as it cannot be observed directly. Dark matter greatly influences gas and galaxies over trillions of light years. Finally, the dark matter particles and gases are overlaid onto one another and their intricate interactions are played out. The dark matter cores of each galaxy collide and move past each other. Once settled, their motion enables the normal gaseous matter to interact and mix. See the hypnotizing cosmic dance for yourself by clicking on the image above and playing the video. (Watch it at 720p for highest quality.) - Adrian Giordani, iSGTW |
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