In today's image, we see the galaxy known as NGC 3521. the galaxy appears to be in a bubble - possible the debris left over from a number of collisions with other smaller galaxies in the past.
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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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