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

"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 ...

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

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

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

About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

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

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

December is the month that fans of 3I/ATLAS have been waiting for as the interstellar comet makes its closest approach to ...

Solar System's Run-In With 'Space Cloud' May Have Triggered a Series of Ice Ages 2 Million Years Ago, Says Scientists Around two million years ago, Earth underwent a series of temperature fluctuations ...

An essential amino acid that is mistakenly believed to cause drowsiness after eating turkey has been found in an asteroid for the first time, giving scientists clues to the origin of life on Earth.

Scientists have long believed that comets and a type of very primitive meteorite called carbonaceous chondrites were the sources of early Earth’s volatile elements — which include hydrogen, nitrogen, ...