A portrait of the vast polar structure as a young phenomenon: Hints from its member satellites S. Taibi, M. S. Pawlowski, S. Khoperskov, M. Steinmetz and N. I. Libeskind A&A, 681 (2024) A73 Published online: 17 January 2024 DOI: 10.1051/0004-6361/202347473