Monday, September 19, 2011

APOD 1.3 - Galaxy in a Bubble

See Explanation.  Clicking on the picture will download
the highest resolution version available.
This galaxy(NGC 3521) spans 50,000 light years and it forms a loose and irregular spiral pattern. The stars on the edge of  the galaxy form loose bands, this is a result of the merger with NGC 352. Scientists were able to tell these two galaxies collided at one point in time, because the debris shells on the outskirts of the galaxy often denote a collision with a satellite galaxy.

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