"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 ...

Outer space has fascinated people from the very first time a human being gazed upon the night sky and wondered what the beams of light in the sky were and what they meant. The moon has particularly ...

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

"This supports the theory that a planet collided with early Earth and the high-energy impact resulted in the formation of the moon." Some of Earth's oldest rocks buried deep in Western Australia may ...

It’s been more than half a century since humans last walked on the Moon, but we’re on the verge of doing so again.

The moon's heavily cratered surface serves as a testament to how Earth's closest celestial neighbor has become a figurative magnet for space rocks during its 4.5 billion-year history. One of the best ...

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 ...