
Strange ripples frozen in Mars’ sands could hold keys to human survival
On Mars, the past is written in stone — but the present is written in sand. Last week, Perseverance explored inactive megaripples to learn more about the wind-driven processes that are reshaping the Martian landscape every day. After wrapping up its investigation at the contact between clay and olivine-bearing rocks at “Westport,” Perseverance is journeying…