In today's image, we see a map of the world showing the brightness of the night sky caused by artificial lighting here on Earth. In may of the more populated areas, the Milky Way galaxy is no longer visible because of the increased sky brightness.

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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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