Seismic waves reveal Earth has 'innermost' core Two Harvard University seismologists, Miaki Ishii and Adam Dziewonski, first proposed the idea of the innermost inner core in 2002 based on ...

A previously unknown doughnut-shaped region found inside Earth’s core deepens understanding of planet’s magnetic field ...

These waves can be detected using seismographs. Some seismic waves are surface waves, while others can travel through the Earth. Part of Physics (Single Science) Electricity, energy and waves ...