Different moon rocks tell different tales about a long-ago bombardment

Sample ages bolster a rising tide doubting a singular 3.9 billion-year-old lunar cataclysm

China's Chang'e-6 spacecraft sitting on the moon.

China's Chang'e-6 spacecraft (shown in a photograph taken by a mini rover that accompanied it to the moon) brought the first samples of the lunar farside back to Earth in 2024. Those samples record different parts of the moon's history than the nearside rocks.

CNSA, Handout via Xinhua

Bits of rock from the farside of the moon are adding weight to a scientific rethink about the solar system’s adolescence.