
Mars may have been enveloped in a thick, steamy atmosphere as the planet’s crust cooled and solidified. That steam bath could have created many of the clay mineral deposits that have long been attributed to water flow on or just beneath the surface. Credit: Courtesy of Kevin Cannon
Planetary scientists from Brown University have proposed a new scenario for the formation of ancient clay minerals on Mars that, if shown to be true, could rewrite the early history of the red planet. There are thousands of ancient phyllosilicate outcrops on the Martian surface...
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