In today's image, we see two contrails from airplanes that cross in the sky. Because of the positioning of the Sun and upper clouds, we also see the shadows cast by these contrails which form an X on the clouds above.

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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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