Scientists have long believed that the Moon was formed by a massive object crashing into the Earth. But what was that thing ...

Conventionally, the moon is thought to have formed during one big impact, but a three-impact model might make more sense ...

This video explored Verona Rupes, the tallest known cliff in the solar system, located on Uranus’s tiny moon Miranda. It ...

"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 ...

New research suggests Earth's Moon formed from the catastrophic collision of our planet with its \"sister\" planet, Theia, born nearby. This \"sibling\" p ...

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

To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed Theia slammed and merged with the primordial Earth, throwing material into ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

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 ...

According to researchers, the composition of a planet or celestial body holds the entire story of its formation and origin.

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.