Scientists pin down timing of lunar dynamo’s demise A conventional compass would be of little use on the moon, which today lacks a global magnetic field. But the moon did produce a magnetic field billions […]
An overlooked piece of the solar dynamo puzzle A previously unobserved mechanism is at work in the Sun’s rotating plasma: a magnetic instability, which scientists had thought was physically impossible under these conditions. The effect […]
Lunar dynamo’s lifetime extended by at least 1 billion years New evidence from ancient lunar rocks suggests that an active dynamo once churned within the molten metallic core of the moon, generating a magnetic field […]