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 ...

Planetary scientists Paolo Sossi and Dan Bower from ETH Zurich have published a peer-reviewed study in Nature Astronomy ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

A new analysis of meteorite isotopes challenges long-held ideas about Earth’s origins, suggesting our planet may have formed ...

For many years, scientists believed that Earth was built from a mix of materials coming from both the inner and outer parts of the solar system. In particular, they thought that some of Earth’s ...

Earth likely formed from inner Solar System material alone, raising fresh questions about the origin of water on our planet.

It isn’t easy to figure out how the Earth was built, because it happened 4½ billion years ago, and no one was there to watch. So scientists have had to look at what the Earth looks like now and at all ...