In today's image, we see an example of a Strong Thermal Emission Velocity Enhancement or STEVE. This phenomenon has only been recently studied and scientists still try to understand what causes this fleeting rivers in the sky.

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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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