In today's image, we see an example of a planetary nebula. This is the end state of a star much like our own Sun. The core has collapsed down to a white dwarf star while the outer layers have been expelled out into space. In this case, we are trying to understand the outer halo of the nebula to see what that tells us about the origins of these nebulae.
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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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