In today's image, we see the Aurora Australis which is the aurora when seen in the southern hemisphere. That cause is exactly the same as the aurora seen in the Northern Hemisphere. The aurora have been prominent this past week because of the large sunspot group AR 3664 which has recently moved around the limb of the Sun due to the Sun's rotation.

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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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