2022 August 03 - Halo of the Cat's Eye
Channel: APOD Podcast
Date: 03/08/2022

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. 

This YouTube channel is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: https://apod.nasa.gov/apod/ap220803.html.

I also provide lecture videos to accompany the free OpenStax Astronomy textbook (https://openstax.org/details/books/astronomy/) on another channel. They are avilable here: https://www.youtube.com/playlist?list=PLMahwAGxKuWldeQ_qaIj8c0i7qbfyfLj4 or through this channel: https://www.youtube.com/channel/UCLXFGlTeF86MsI1HqBcuqKQ

Note: All commentary is created by me and is not necessarily approved or sanctioned by APOD or NASA.