NASA’s Perseverance Finds 245-Foot Mars Rock Record of Repeated Asteroid Impacts
A 245-foot-thick stack of rock on Mars may preserve a sequence of asteroid impacts from nearly 4 billion years ago….
Mars geology
NASA’s Curiosity Finds Vast Martian Polygon Field With Origins Still Unresolved
NASA’s Curiosity rover documented an unusually extensive field of tiny, honeycomb-like polygons in Mars’ Valle Grande on June 19 and…