These are two digital illustrations representing two different phases of the life cycle of a star. The first is a star nearing the end. It has fused it’s lighter elements into heavier elements creating an expanding shell of gas. This shell is know as a planetary nebula. The second is a newly formed star with polar jets interacting with nearby clouds of gas. The object in the lower left of the image is know as a Herbig-Haro object. Both of these illustrations were created on the Apple iPad using the Apple Pencil and the Procreate drawing app. Prints of the Planetary Nebula can be found here. You can license the Herbig-Haro image through shutterstock.

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Planetary Nebulae from Raymond Cassel on Vimeo.