If you’ve seen any of the “Ice Age” animated Disney movies, we have some bad news: You don’t know the real ice age.

Fresh evidence suggests early Earth wasn’t locked under a rigid stagnant lid but was already experiencing intense subduction.

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

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 ...

A new study reveals how specialized microbes might convert Martian regolith into durable, life-supporting structures. Since ...

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention of scientists. This planet orbits the star within the "Goldilocks zone"—a ...

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

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

"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 ...

Searching for technosignatures—signs of technology on a planet that we can see from afar—remains a difficult task. There are ...