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Colliding Galaxies Create Active Galactic Nuclei

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Published on Mar 21, 2012

This simulation follows the collision of two spiral galaxies that harbor giant black holes. The collision merges the black holes and stirs up gas in both galaxies. The merged black hole gorges on the feast and lights up, forming an active galactic nucleus called a quasar and creating a 'wind' that blows away much of the galaxy's gas.

Source: NASA

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