Mars may once have hosted a warm, ocean-bearing environment, according to new data collected by a rover that explored an area believed to be an ancient shoreline. The evidence points to buried “beach” deposits,

Mars is a chilly desert of rock and dust — but 4 billion years ago, the planet had rivers, lakes and even oceans with sandy beaches. Data from China's Zhurong rover recently revealed the first evidence of one of those long-lost Mars beaches,