In today's image, we see the large sunspot region known as AR 3664 as it moves around the limb of the Sun. The large prominence is larger than Earth and is now easily visible when seen against the darkness of space. One of the largest solar flares was also recently explode by this sunspot group although this is not seen in the image.

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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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