Contact: Jason Maderer
Georgia Institute of Technology
Caption: Georgia Tech assistant professor Josef Dufek created bomb sags in his lab by propelling particles into sand beds. The demonstration is used to study a sag on the Martian surface, created when a volcano erupted nearly 3.5 billion years ago. The study provides more evidence of water on early Mars.
Credit: Georgia Institute of Technology
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Related news release: Ancient volcanic blast provides more evidence of water on early Mars