5892 20221214182951.0 SCART-2022-0118 Pham, Lê Binh San Effect of an meteorites and asteroids bombardments on the atmospheric evolution of Mars 2010 Early in its history, Mars probably had a denser atmosphere with sufficient greenhouse gases to sustain the presence of stable liquid water at the surface. Previous studies have showed that asteroids and comets impacts could affect the atmospheric evolution not only by causing atmospheric erosion but also by delivering material and volatiles to the planet. Here, we investigate the atmospheric loss and the delivery of volatiles with the help of a simplified semi-analytic model that takes into account the impact simulation results. NO Karatekin, Özgür Dehant, Véronique EPSC Abstracts 5 2010 EPSC2010-127 lebinhsan.pham@observatoire.be published in NONREF