CATACLYSM'S END

Abstract

A popular theory about the early Solar System comes under fire. That horrific episode, known as the Late Heavy Bombardment (LHB), has been an integral part of Earth's origin story for decades, ever since geologists did a systematic study of samples brought back from the Moon by NASA Apollo missions. But now, the once-popular theory has come under attack, and mounting evidence is causing many researchers to abandon it.