The solid inner core at the center of the Earth, surrounded by the outer core, mantle and crust. Here’s why: While it is well known that a material must be at or below its freezing temperature to be ...

Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

Researchers say they have uncovered evidence that early Earth was home to more hydrogen than previously thought, calling into question widely held beliefs about the origins of water and the evolution ...

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon. When you purchase through links on our site, we may earn an affiliate ...

The mantle is split up into two domains — the African and the Pacific — that emerged when supercontinent Pangaea broke apart. When you purchase through links on our site, we may earn an affiliate ...

Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds.

There could be a large body of water buried deep beneath the Earth's surface containing as much water as in every ocean combined, according to new scientific research. You know, just your average ...

For most of its history, Earth has existed in a greenhouse state—warm, ice-free, and rich in atmospheric carbon dioxide. The ice-covered conditions of today are an exception, shaped by an intricate ...