Perseverance Finds Evidence of Repeated Asteroid Bombardment on Mars

NASA's Perseverance rover has discovered evidence of repeated asteroid impacts on Mars, preserved in ancient rocks at the Jezero crater rim. The impact debris layers provide a record of early solar system bombardment, as Mars lacks plate tectonics to erase such history. This discovery offers new insights into the timing and intensity of impacts in the inner solar system, and sample return could date these events precisely.