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An artist’s impression of how Mars may have appeared shortly after its formation. Visible are surface areas with clay (blues and greens) are believed to have interacted with baslatic lavas and rocks melted by impacts (browns and blacks). | Kevin Cannon
Planets

Steamy Atmosphere Produced Clays on Mars, New Theory Suggests

Conventional wisdom holds that Mars once had a thick atmosphere capable of supporting surface water. A new proposal is entirely different.

Published On 12/07/2017
3:08 PM EST
“This is a new and controversial idea.”
Mars’ formation was rapid compared to other planets in the solar system, but this meant the planet had less material to pull from and ended up with somewhat stunted growth. | Kevin Cannon