In today's image, we see the spiral galaxy known as NGC 7331. Wishing it, a supernova is marked which was discovered earlier this month. This is an example of a Type Ia supernova which are key distance indicators in astronomy.

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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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