MIT researchers have discovered rare isotopic traces of a “proto Earth” that existed before the giant impact that shaped our modern planet. Found deep in ancient rocks, these potassium isotope signatures reveal remnants of Earth’s earliest material, offering fresh insight into the planet’s formation and the solar system’s earliest history.MIT researchers have discovered rare isotopic traces of a “proto Earth” that existed before the giant impact that shaped our modern planet. Found deep in ancient rocks, these potassium isotope signatures reveal remnants of Earth’s earliest material, offering fresh insight into the planet’s formation and the solar system’s earliest history.
