This is a cake, made to look like the planet Jupiter, both on the surface and inside.
I detailed the atmosphere of Jupiter by covering the cake with ivory marshmallow fondant, then dry brushing a combination of ivory, brown and maroon edible ink. The top ended up being a bit more saturated as I was largely experimenting with colours at that point and was throwing in a bit of yellow. I ended up sticking mostly with ivory and adding extra detail with the brown. Once all the base colours were down I started removing colour to create the storms or other distinguishing features and topping it off with highlights. The whole process took about 8 hours with teeny tiny brushes.
And for the inside:
Our knowledge is mostly theoretical of course, but the gas giants are thought to have a core comprised mostly of rock and ice. This is surrounded by a layer liquid metallic hydrogen, and the outer layer is composed of molecular hydrogen. *cake is totally not to scale http://cakecrumbs.me/2013/07/24/jupiter-structural-layer-cake/
In cake speak, this translates to a core made of mudcake, surrounded by almond butter cake, surrounded by a tinted vanilla Madeira sponge. Thereâ€™s a crumb coat of vanilla buttercream underneath the fondant.