NASA's Perseverance Rover and China's Zhurong rover have found signs of soaked sand dunes and rushing rivers on the red planet. China's rover found evidence that frost may have cemented dunes together as recently as 400,000 years ago. NASA's Perseverance found signs that a fast, powerful waterway once carved its way into Jezero crater, dumping water at a fantastic rate, according to a National Geographic report.
