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

A new study shows the mysterious impactor probably formed in the inner solar system, right next to early Earth.

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

Moon’s precursor planet, Theia, disappeared billions ago, leaving scientists no direct chemical evidence to support the ...

Isotopic fingerprints in lunar, terrestrial, and meteorite samples show Theia formed in the inner Solar System, likely near ...

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 ...

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

Theia' is a long-vanished world, a planet-sized body thought to have smashed into the early Earth and that helped to form the ...

The most widely accepted explanation for how the Moon was formed is the giant-impact theory. It states that a Mars-size ...

A protoplanet crashed into Earth more than four billion years ago, ejecting the Moon. It is now clear where the protoplanet ...

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