"During the early solar system's game of cosmic billiards, Earth was struck by a neighbor,” said Dauphas. “It was a lucky shot. Without the moon's steadying influence on our planet's tilt, the climate ...

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

Apollo samples provide evidence: Researchers analyzed Moon rocks brought back by the Apollo missions and, for the first time, ...

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

Scientists are exploring the origin of life's ingredients on our planet. A recent study suggests that essential volatile compounds, such as hydrogen and carbon, may have come from a cataclysmic impact ...

Scientists believe the moon was formed from the debris of a collision between Earth and the planet Theia, which was likely ...

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

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

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

A collision between Earth and a massive Mars-sized protoplanet likely caused the formation of our moon. Now scientists from ...