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What exactly happens when two big galaxies collide with one another? An image of a galaxy collision captures only one stage of billion-year-long collision process — a gradual waltz of stars and gas choreographed by gravity.. This visualization of a galaxy collision supercomputer simulation shows the entire collision sequence, and compares the different stages of the collision to different interacting galaxy pairs observed by the NASA/ESA Hubble Space Telescope. With this combination of research simulations and high resolution observations, these titanic crashes can be better understood.Crossfades between different merging galaxies from a collection of fifty nine new images of colliding galaxies make up the largest collection of Hubble images ever released together. As this astonishing Hubble atlas of interacting galaxies illustrates, galaxy collisions produce a remarkable variety of intricate structures.
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