In today's image, we see two galaxy which have recently interacted. We can see how the one galaxy contains material that has been distorted as the gravitational fields of the two galaxies interacted. These interactions also increase the stat formation rate in the galaxy giving rise to the large number of blue stars which color much of these tidal streams.

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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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