The study suggests the weak but enduring magnetic field ... that over three billion years ago, the moon’s magnetic field was as strong as Earth’s current field, which ranges from 25 to 65 ...

The field often gets very weak, then bounces back, never having flipped. As Ron Merrill, a magnetic-field specialist at the University of Washington remarked when asked whether we're in for a ...

Earth's magnetic poles are shifting unpredictably, with rapid drifts and weakening fields raising questions about a possible future reversal and its global effects.

When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet. The field inside a solenoid is strong and uniform. The small magnetic field caused by ...