Seismic Echoes Reveal New Structures (IMAGE) Johns Hopkins University Caption Using a new technique originally developed for studying the cosmos to study the Earth's core, researchers developed a new map of Earth's interior. Credit D. Kim, V. Lekíc, B. Ménard, D. Baron and M. Taghizadeh-Popp Usage Restrictions None License Licensed content 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.