Gomez's Hamburger
A planetary nebula; not edible
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How it gets the hamburger shape (from source)
In this stage, the core is still relatively cool. Consequently, the star emits ordinary visible light, not ultraviolet radiation. Therefore, the surrounding gas does not glow. The ejected material, however, contains vast numbers of microscopic dust particles, which can reflect the starlight and make the material visible. This same effect produces halos around streetlights on a foggy night.
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