"The exosphere is like the icing on the Earth cake. It is the outermost layer."
"The exosphere is like a exoskeleton. It is the last layer of the atmosphere."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.