Earth's crust ranges from 5 to 70 kilometers in thickness and serves as the planet's outermost layer. This thin shell represents less than one percent of Earth's total mass, yet it's the only layer we ...

thermal characteristics (temperature changes), chemical composition, movement, and density. Each of the layers are bounded by "pauses" where the greatest changes in thermal characteristics, chemical ...

Back in my day, there were only four layers of Earth: the crust, mantle, liquid outer core and solid inner core. Now, scientists have revealed a new, distinct layer within our planet’s inner core, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Scientists have ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The beginnings of a strange layer of molten rock deep inside the Earth ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Earth's inner layers have just got a bit more complicated, with ...

Earth's many layers are hidden from view. But what if we could drill through the center of the planet to the other side? What extreme forces and temperatures would we encounter deep within the planet?

For decades, scientists have debated the nature and origin of what some experts consider the most anomalous and enigmatic layer of Earth’s deep interior: the boundary between its scorching-hot liquid ...