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 ...

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

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

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

Scientists continue to explore the deep story of how Earth and the moon formed. One idea has gained attention because it ...

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

The formation of the Moon may have come harder on the heels of Earth's birth than we thought. According to a new analysis by researchers from the US, France, and Germany, Earth's constant companion ...

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 thorough investigation published in May 2023 found that the inner core of the Moon is, in fact, a solid ball with a density ...

The moon was formed 4.5 billion years ago in a "giant impact" that left Earth with a two-hour day, according to new research. Scientists have long debated the circumstances which led to the formation ...