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.
In cake speak, this translates to a core made of mudcake, surrounded by almond butter cake, surrounded by a tinted vanilla Madeira sponge. There's a crumb coat of vanilla buttercream underneath the fondant.
Jupiter Structural Layer Cake
The Earth Cake has been super-sized.
All science should be explained by cake.
"My god, it's full of cake!"
At the center of the earth is a solid iron ball about the size of a moon.
It is hotter than the surface of the sun.
In space you can't see the stars. The sun is too bright. There is nothing else.
In space you can't hear anything. I wasn't meant to be here.
These pictures need a Galactus cosplayer in the background.