This video shows some of our main results for the impact of projectiles onto granular targets, such as happens when cm-size seeds fall on the ground or km-size asteroids collide with planets and moons. The video reproduces animations from a numerical investigation under review in Phys. Rev. E. For that, we carried out grain-scale computations (using the discrete element method) of the impact of solid projectiles on a cohesionless granular medium, where we varied the projectile and grain properties for different available energies. Among other results, we found that differences in grain concentrations (packing fractions) can engender the diversity of scaling laws for the penetration of the projectile found in the literature.
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