The final Mars talk that I saw yesterday came at the end of a session rich with discussion of geochemistry, aqueous alteration, hydrothermal systems, and reference to the ubiquitous layers seen by both Mars rovers as being emplaced, or at least altered, by water. So I was interested to hear that the final presenter, Don Burt, has an alternative hypothesis. Burt suggested that since layers are so ubiquitious, and that … Continue reading Impacts, Occam's Razor, and Layers