It’s one of the most enduring ideas about the formation of our solar system: Earth collided with a Mars-sized object, Theia, ...

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

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

Atoms found deep inside our planet argue that parts of “proto-Earth,” the early version of our planet, still survive inside ...

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

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

Certain well known properties of Earth’s magentic field could help scientists better understand the origins of both the Earth and the Moon. “Our new idea is to point out that our theoretical ...

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

A peculiar property of the Earth's magnetic field could help us to work out how our planet was created 4.5 billion years ago, according to a new scientific assessment. There are several theories about ...

Two enormous structures that sit at the border between the Earth's mantle and its core have puzzled scientists for decades.

When you buy through links on our articles, Future and its syndication partners may earn a commission. New model suggests an ocean of magma formed within the first few hundred million years of Earth's ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...