The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

The core of the Earth is undergoing surprise structural changes, researchers believe. A new study has seen scientists unexpectedly find that the inner core of our planet is changing its physical ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds. Known as large low-seismic-velocity provinces (LLSVPs), these blobs are both hotter and ...

Now, JWST may have revealed evidence that our entire universe exists inside the event horizon of a black hole inside a larger ...

Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the universe, others right here on Earth." ...

Sinking in one place leads to plates moving apart in other places. The movement of the plates and the activity inside the Earth, is called the theory of plate tectonics.