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SlideshowReport

Interacting and Colliding Galaxies

Description
 Interacting and Colliding Galaxies
(b) These two galaxies, NGC 2207 (right) and IC 2163, are orbiting
and tidally distorting each other. Their most recent close encounter
occurred 40 million years ago when the two were perpendicular to
each other and about 1 galactic diameter apart. Computer
simulations indicate that they should eventually coalesce.
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