Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

The original study, by a different group, made headlines with the claim that the crater formed 3.5 billion years ago. If true, it would be Earth’s oldest by far.

New research suggests that the geological site harbors the oldest known surviving fragments of Earth’s crust, dating back to 4.16 billion years ago.

The origins of plate tectonics on Earth are hotly debated, but evidence from Australia now shows that parts of the crust ...

Earth is about 4.5 billion years old, and as the eons passed, the crust of the young planet experienced turbulence. Asteroid collisions shattered some parts, which melted and recrystallized, while ...

A Part of Earth’s Original Crust Still Exists NEMES LASZLO/SCIENCE PHOTO LIBRARY - Getty Images "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." ...