Yutu-2 radar observation of the lunar regolith heterogeneity at the Chang’E-4 landing site Chunyu Ding, Siting Xiong, Jing Li, Yan Su and Shaopeng Huang A&A, 664 (2022) A43 Published online: 04 August 2022 DOI: 10.1051/0004-6361/202142803