Bouncing seismic waves reveal distinct layer in Earth's inner core

Data captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth
Data captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth's inner core, according to seismologists from The Australian National University (ANU).

Bouncing seismic waves reveal distinct layer in Earth's core” – sciencesprings

450-mile-wide solid metal ball forms Earth's innermost core, earthquake waves reveal

Journey to the centre of the earth: What's inside the planet?

Welcome to the Science Carnival! - This Week in Science (TWIS) - Episode 914

Geologists Reveal Earth's Inner Core Has an Inner Core of Its Own

Earth's Core: The Enigma 1,800 Miles Below Us - The New York Times

New model reveals previously unrecognized complexity of oceanic earthquake zones

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Geophysics – sciencesprings

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Up-to-fivefold reverberating waves through the Earth's center and distinctly anisotropic innermost inner core

Researchers peer into Earth's inner core: Data show solid metal sphere is 'textured

How do scientists study the Earth's core, and what kind of tools and techniques do they use? - Quora

Earth's inner core may have a whole other core inside it