Chinese Moon Mission Uncovers Surprising Resurgence of Lunar Magnetic Field

Chang’e 6 samples from the Moon’s far side reveal an unexpected strengthening of the lunar dynamo 2.8 billion years ago.

Chang’e 6 is the first mission to return samples from the Moon’s far side, specifically from the Apollo crater in the South Pole-Aitken Basin.
Analysis of basalt fragments dated to 2.8 billion years ago shows a magnetic field strength of 5 to 21 microteslas, stronger than previously recorded measurements from 3.1 billion years ago.
This discovery challenges the long-held belief that the Moon’s magnetic field steadily declined after 3.1 billion years ago before disappearing entirely.
Researchers suggest the resurgence may have been driven by a magma ocean inside the Moon, precessional forces, or core crystallization processes.
The findings provide new insights into the Moon’s thermal and geological history, offering valuable guidance for future lunar exploration missions.