China's Zhurong Mars rover has found evidence of a dramatic shift in Mars' climate 400,000 years ago, in the form of dark ridges laid on top of bright dunes that ripple across the sands of Utopia Planitia, which the rover is exploring.
Scientists led by Li Chunlai from the National Astronomical Observatories of the Chinese Academy of Sciences used the rover's instruments, coupled with high-resolution observations from China's Tianwen-1 Mars orbiter, to take a closer look at large sand dunes near where Zhurong landed in May 2021.
