Episode Details

In today's image, we see a simulation showing the formation of a galaxy disk over billions of years compressed down into about 2 minutes. Galaxy evolution takes such a long time that there is no way we can see a galaxy evolve and change except through models and simulations such as the one used today.

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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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