Around 4.5 billion years ago, a planet called Theia is thought to have smashed into newborn Earth. The messy collision kicked ...

These images mark an early milestone in the mission, confirming that OSIRIS-APEX is healthy and on course for its 2029 ...

Two mysterious blobs deep inside Earth may hold clues about the origin of life on our planet, new research finds. Deep ...

About 4.5 billion years ago, Earth had a violent neighbor. A young, still-forming planet named Theia slammed into our world ...

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

Scientists may finally be closing in on the origins of two colossal, mysterious structures buried nearly 1,800 miles inside ...

A lone man walks across an expanse of ice; a mottled tundra; desert badlands. The single human figure becomes a focal point as images from Earth’s diverse ecosystems change underfoot. In this visual ...

Researchers have pinpointed a super-Earth in the habitable zone of a nearby M-dwarf star only 18 light-years away.

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

Ice Age" invites viewers into a dramatic new era of prehistoric life, millions of years after the extinction of the dinosaurs ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.

A hyper-realistic picture of life during that Pleistocene era emerges with Apple TV's five-part, computer-driven “Prehistoric ...