<p>Science writer Hanne Strager explores how the trailblazing Danish seismologist Inge Lehmann overcame self-doubt to discover that Earth has a solid inner core, overturning the long-held belief that it was liquid</p>
Seismology is the study of earthquakes and the propagation of elastic waves through the Earth. It involves the use of various instruments to detect and analyze seismic activity, helping scientists understand the Earth's internal structure and the dynamics of tectonic plates.
The Earth's inner core is a solid sphere composed primarily of iron and nickel, located at the center of the Earth. It is surrounded by a liquid outer core and plays a crucial role in generating the Earth's magnetic field.