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 ...

The history of Earth's continents might be different from what we first thought. The most popular theory of how the continents formed billions of years ago may not be right, according to a paper in ...

Tectonic map of the Earth. The first continental crust on Earth formed more than 3 billion years ago. Likely the first fragments formed by partial melting and re-crystallization of the primordial ...

Parts of ancient Earth may have formed continents and recycled crust through subduction far earlier than previously thought.

Tiger Iron formed when in the sea dissolved iron reacted with free oxygen produced by the first photosynthetic life forms on Earth. For the first 2 billion years of Earth's history, there was barely ...

Violent collisions between the growing Earth and other objects in the solar system generated significant amounts of iron vapor, according to a new study by LLNL scientist Richard Kraus and colleagues.

You would have a hard time finding these common Earth rocks on our neighboring planets. Here’s what makes our landscapes so unique. Limestone landscapes, like this one in the Stone Forest in China’s ...