Hexagonal Prisms Form in Water-Ice Clouds on Mars, Producing Halo Displays Seen by Perseverance Rover

M. T. Lemmon, D. Toledo, V. Apestigue, I. Arruego, M. J. Wolff, P. Patel, S. Guzewich, A. Colaprete, Vicente-Retortillo, L. Tamppari, F. Montmessin, M. de la Torre Juarez, J. Maki, T. McConnochie, A. Brown, J. F. Bell