Nearby Colliding Galaxies

A galaxy-galaxy collision may take about 1 billion years to occur. Hence, we cannot actually witness a full merger taking place. However, we can take snapshots of different mergers at various stages of the encounter. Below, there are several such examples. The first three images were obtained online from the Digitized Sky Survey, and are displayed as negatives to make it easier to see details. To view an image at higher resolution, please click on the image.