Living time capsule: Mars’ mantle contains 4-billion-year-old evidence of violent planetary impacts

NASA’s InSight mission has revealed that Mars’ mantle is studded with remnants from ancient planetary collisions. Seismic data from marsquakes uncovered buried fragments, some as large as 2.5 miles across, providing unprecedented detail of the planet’s interior. This discovery highlights Mars’ role as a preserved record of the early solar system, contrasting with Earth’s erased geological history.