.THE function of Bayesian inversion to a variety of lithologic parameters in an evaluation of seismic data barely seems the stuff of titles. Yet when the seismic records you are actually examining come from Mars, and also when your reasoning advises that the most effective illustration for them is fluid water in the pores in between rocks, you possess an account. There is actually dwarfs thirst for extra, when it relates to wandering science, than water on Mars. Why performs the possibility provoke such excitement-- and what does this brand-new research contribute to the story?