Earth's inner core may have changed shape, according to researchers studying unknown transformations deep within the planet.

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

A new study out this week said that the Earth's inner core is less solid than previously thought. Scientists still have questions, though.

Our planet's interior is much too deep and hot to explore with probes, so scientists rely on seismic waves to understand and model its structure. Seismic waves are shock waves tha ...

seismologist and professor of Structure and composition of Earth's deep interior at Utrecht University in the Netherlands. "These two large islands are surrounded by a graveyard of tectonic plates ...

seismologist and professor of Structure and composition of Earth’s deep interior at Utrecht University in the Netherlands. “These two large islands are surrounded by a graveyard of tectonic ...

Now, seismologists have found new clues about their composition that could upend our understanding ... Thousands of ...

Our planet's interior is much too deep and hot to ... But how good is your knowledge of Earth's inner structure? Find out by taking this quiz. If you need a hint, hit the yellow button.