A 20 kiloparsec bipolar Lyman α outflow from a radio galaxy at z = 2.95 M. Coloma Puga, B. Balmaverde, A. Capetti, C. Ramos Almeida, F. Massaro and G. Venturi A&A, 686 (2024) A220 Published online: 14 June 2024 DOI: 10.1051/0004-6361/202348849