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Spiral Galaxies

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Supercomputing Reveals “Fossil Record” of Galaxy Collisions and Mergers

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NGC 6090 is a beautiful pair of spiral galaxies with an overlapping central region and two long tidal tails formed from material ripped out of the galaxies by gravitational interaction. This image is from NASA Hubble Space Telescope.

A colorful collection of galaxy specimens from NASA Wide-field Infrared Survey Explorer mission showcases galaxies of several types, from elegant grand design spirals to more patchy flocculent spirals.

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