My research explores in interconnected steps the impact cratering phenomena across a broad range of energy scales in the inner Solar System. Starting from small-scale impacts on near-Earth rubble­pile asteroids, it scales up to first the larger-scale Chicxulub asteroid impact that changed life on Earth 66 million years ago, then to possible large impact(s) that may have changed the habitability of Mars at Late Noachian to Hesperian epoch (~ 3.8-3.0 Ga). The novel results from the Chicxulub scientific drilling project and NASA’s DART planetary defense mission, combined with state-of-art cratering models developed in this project, reveal asteroid intrinsic properties and the effects of impact processes that caused the last terrestrial mass extinction and possibly shaped planetary evolution of Mars.