What Did Earth's Ancient Magnetic Field Look Like? (image) Carnegie Institution for Science Share Print E-Mail Caption This is an illustration of ancient Earth's magnetic field compared to the modern magnetic field courtesy of Peter Driscoll. Credit Peter Driscoll Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.