This model would explain why the moon no longer has a magnetic field. Since the angle between the mantle and the core has narrowed over time, while the distance between the moon and the Earth has widened, this has caused the tidal forces to steadily decrease. While these forces used to be enough to generate a dynamo inside the moon, they aren't anymore. | This model would explain why the moon no longer has a magnetic field. Since the angle between the mantle and the core has narrowed over time, while the distance between the moon and the Earth has widened, this has caused the tidal forces to steadily decrease. While these forces used to be enough to generate a dynamo inside the moon, they aren't anymore. |