Cherry-Jerry is not an icy dirtball

Here's my latest prediction of the structure of comet Churyumov Geramisenko. It is not a "rubble-pile". It is a complex layered structure. It has an outer protective crust which seals off a certain level of pressure, say 1/100th of an atmosphere or so. Under that is a chambered atmosphere layer. Like a quilt it absorbs impacts and the convection of gas acts like a thermal exchange from the crust to the centre.

The middle of the comet is seperated as the outside into at least 2 sections. There is a fine soil and lakes in each section. Since centrifugal forces approximately match mutual gravitation between the two sections, convection and capillary action drives any movement of fluid and gas, rather than gravity. Jets are driven from a complex network powered from the thermal exchange near the surface but traveling transversely and vertically through various sections.