In today's image, we see the airglow in ripples over Tibet. The airglow is similar to the aurora but is caused by chemiluminesence in the atmosphere and is visible all around the Earth instead of just near the North and South Magnetic Poles.

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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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