Scientists have been contemplating the mysterious structures deep within the Earth for many years. Research indicates that they are billions of years old. Could these be remnants of an ancient planet ...

Only last year did scientists detect evidence of what they suspect with greater confidence are remnants of Theia inside Earth ...

There's been some new research about an ancient planet - called Theia - that experts think helped form the Earth we know today. Scientists think that Theia crashed into Earth billions of years ago ...

These simulations corroborate the hypothesis that materials from Theia were introduced into Earth's lower mantle ... computing reveals shocking secrets inside the abyss 'China vs NASA begins ...

The prevailing theory was that the Moon was the result of a collision between the early Earth and the protoplanet Theia. New measurements indicate that the Moon formed from material ejected from ...

Intriguingly, the team has ascertained that the upper mantle of the Earth underwent a transformation, forming a molten ocean containing materials from both Gaia and Theia, while the lower mantle ...

Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet). The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.

Scientists suggest that Jupiter played a significant role in the chaotic early years of the solar system, potentially contributing to the formation of Earth's moon. The so-called "great ...