In today's image, we see the moon of Saturn known as Helene. This is a very small moon, about 30 km across and was imaged by the Cassini spacecraft back in 2012. The small number of impact craters on the surface leads astronomers to wonder what might have shaped the surface features of this moon in the past.

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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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