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

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

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

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

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

To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed ...

New research shows that Theia, the planet that collided with Earth and formed the Moon, was a rocky world born closer to the ...

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

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

Researchers from the Max Planck Institute for Solar System Research led the study. They examined iron isotopes in 15 Earth ...

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