Scientists Discover Strange Signal Coming From Deep Within Earth’s Core

Of course, studying Earth’s core is by no means an easy feat. Since we can’t directly study the core, we have to rely on sophisticated instruments that can read seismic data and conduct various other readings and analyses.

Typically, geoscientists will look at seismic waves when conducting core research.

This is because the velocity and frequency of seismic waves can indicate changes in pressure, temperature, and composition in Earth’s core. It’s how we first determined the structure of the core. By studying seismic waves, we were able to determine that the Earth had a core in the first place and that there was a change from a liquid to a solid.