SUMMARY: The W.M. Keck Observatory in Hawaii took this photograph of two galaxies about to collide over 5 billion light-years away from us. The image was possible because of the new laser guide star system for adaptive optics which corrects the distorting effects of the Earth's atmosphere. This allows Keck to have nearly the same view as space-based observatories like Hubble. Both galaxies in this collision are mature, and seem to have used up all their gas. This won't create spectacular amounts of new star formation, which is what happens with less mature galaxies.
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