First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA S. Aiello, A. Albert, S. Alves Garre, Z. Aly, A. Ambrosone, F. Ameli, M. Andre, M. Anghinolfi, M. Anguita, M. Ardid et al. (242 more) Eur. Phys. J. C, 83 4 (2023) 344 Published online: 28 April 2023 DOI: 10.1140/epjc/s10052-023-11401-5