In today's image, we see an example of red sprite lightning in the sky. This lightning is associated with storm clouds but occurs much higher in the atmosphere with the tendrils that can speed down at about 1/10 the speed of light.

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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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