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 ...

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 ...

There's a lot of debate about what LLVPs are. Some studies have suggested that they're material from the ancient Earth — either a layer of primordial unmixed rock from the planet's formation or ...

There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity.

Scientists have long theorized that primordial helium—helium-3, an isotope formed before Earth’s creation—exists in the planet’s core. Related Stories ・Earth’s inner core is far less ...

Iron sinks deep inside Earth and forms its core ... and heavy rains pour down on the planet. After several hundred million years of falling rain, great oceans form. 4,055 mya: Oldest known ...

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 ...

Planets can be extremely hot when they are born, and new computational experiments show that such planets would have an atmosphere composed of a homogenous mixture of hydrogen and water. As the ...

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

Now is the time to reclaim our sacred connection with Earth, and to think deeply, radically, and personally about the best ways to keep this planet—and its millions of species—alive.

Butch Wilmore and Suni Williams, together with Nick Hague and Aleksandr Gorbunov, departed the International Space Station at ...