Galactic spiral structure revealed by Gaia EDR3 E. Poggio, R. Drimmel, T. Cantat-Gaudin, P. Ramos, V. Ripepi, E. Zari, R. Andrae, R. Blomme, L. Chemin, G. Clementini et al. (7 more) A&A, 651 (2021) A104 Published online: 28 July 2021 DOI: 10.1051/0004-6361/202140687