Space/Science — HabitableZone

Space/Science » in reply to re: Ahh..

Mars, Marcia, Mars

Hope does spring eternal. Especially when it comes to Mars.

Water, of course, is the well of hope; and there is water on and in Mars, no doubt of it. But how much, really? And to what extent is water the active volatile -- as opposed to something else, such as sulfuric acid?

Over the years, so many claims have been made based on liquid water as the surface volatile, and yet there is only tangential evidence of liquid water at the surface. That's why the real origin of all this "clay-like" material needs to be thoroughly investigated, not just assumed to be the result of flowing (albeit hot) water on or just under the surface.

Can another volatile produce the signatures of phyllosilicates? On Earth, that question would hardly occur -- because water is so pervasive. But is it or was it that pervasive on Mars?

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