The China National Space Administration released an image showing its Zhurong rover and landing platform, taken by a remote camera that was dropped into position by the rover, on June 11, 2021. (CNSA/AP via CNN Newsource) Mars may have once hosted an ocean with waves that lapped against sandy beaches 3.6 billion years ago, according to new research. China’s Zhurong rover and its ground-penetrating radar detected the ancient shorelines when it operated from May 2021 to May 2022. The rover landed in Utopia Planitia, a plain within the largest known impact basin on Mars, near a series of ridges in...