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Merging Spiral Galaxies - simulating visual appearance

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Uploaded on Jun 1, 2008

This video shows a computer simulation of the appearance of two merging spiral galaxies as they would appear through a telescope, including absorption of starlight by interstellar dust. The colors are approximately what would be perceived by the human eye. Credits: Patrik Jonsson, Greg Novak & Joel Primack, University of California, Santa Cruz.

This movie won a semifinalist honor (top ten in the category) in the 2008 NSF Science & Engineering Visualization Challenge, and was also featured in the National Geographic Special "Inside the Milky Way" in 2010. A high-quality version can be downloaded from http://code.google.com/p/sunrise/wiki...

The song is "All's Well that Ends Well" by Nancy Abrams. You can find her web site at http://expandinguniverse.org/.

For a different view of the same simulation, check out http://www.youtube.com/watch?v=JsEzg9... and http://www.youtube.com/watch?v=yIjcEn... that give a better appreciation for how the brightness of the galaxies changes through the merger.

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