The problem is, without sending out some kind of seismic sounding probe, how could you tell whether an object such as, say, Ceres, is internally diffrentiated, as opposed to an object that isn't?

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There is a growing tendancy to think of Man as a rational, thinking being, which is absurd.- Marvin the Martian.

It's gotten to the point where careful investigation is needed just to tell parody from reality. I think that means reality is broken.- Noclevername.