"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.

Earth and the planetary object that gave rise to the Moon were likely born in the same region of the solar system.

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

Moon has been Earth’s celestial companion for over four billion years. However, the formation of this natural satellite was catastrophic. It was long believed that the Moon was born from a cataclysmic ...

About 4.5 billion years ago, the most momentous event in the history of Earth occurred: a huge celestial body called Theia ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...

In the current issue of the journal Science, researchers determine the possible composition of Theia. The impactor’s ...

Some of Earth's oldest rocks buried deep in Western Australia may hold new clues about the dramatic event that gave rise to our moon.

A discovery of ancient rocks might finally answer one of the biggest questions in science: how did the Moon form? Researchers ...

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 ...