Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the Greek god of the underworld, reflecting the extreme heat that likely ...

Planetary scientists search for ancient impacts to learn about Earth’s early formation. So far, nobody has found an impact ...

Subduction, a crucial geological process on Earth, may have begun hundreds of millions of years earlier than traditionally believed. This surprising discovery comes from a new study published by ...

Rocks tell us a story which most climate scientists seem to have ignored in their panic about a runaway greenhouse effect ...

Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed. Primordial rocks often get melted and recycled by Earth's moving tectonic ...

Jonathan O'Neil / AP Ancient rocks could shed light on Earth's earliest days Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed.

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

It is even possible that some may have landed on the Moon. 4.4 billion years ago, not long after Earth formed, an extreme collision shattered part of the Earth and formed our only satellite, which ...

By 4.35 billion years ago, the Earth might have cooled down enough for the first crust to form and life to emerge. However, very little is known about this early chapter in Earth’s history, as ...

Work from two decades ago suggested the rocks could be 4.3 billion years old, placing them in the earliest period of Earth's history. But other scientists using a different dating method contested ...