The Moon used to have a magnetic field, powered similarly to how the geodynamo powers the magnetism of Earth. Unlike our planet though, the Moon became solid and the magnetic field disappeared.

The magnetic analysis of Chang'e 5 basalt samples by Cai and his colleagues revealed that the Moon had a magnetic field of 2,000 to 4,000 nanoteslas when the Moon was 2 billion years old, or at ...

Chinese scientists have found direct evidence that the moon’s magnetic field persisted well into its midlife, long after it was thought to have disappeared. Researchers analysing tiny rocks ...

BEIJING -- A new analysis of samples collected by China's Chang'e 5 mission has revealed that the moon possessed a weak yet still running dynamo magnetic field approximately 2 billion years ago.