Multipolarized radar reveals shallow subsurface structure and middle-late Amazonian aqueous activity in Utopia Planitia, Mars. - Liu, Yike; Yan, Tianfan; Qin, Xiaoguang; Chen, Ling; Zhang, Jinhai; Liu, Yang; Lin, Yangting; Wu, Fuyuan; Mitchell, Ross N; Zhang, Zhendong (National Science Review, 2025)