Episode Details

In today's image, we see the supernova remnant known as Cassiopeia A. This is the remnant of a massive star that would have been seen to explode as viewed from Earth several hundred years ago.

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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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