The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

Seismic data from NASA’s InSight mission reveals a hidden compositional boundary inside Mars that matches what forms inside ...

Mars may once have hidden enormous seas of magma beneath its surface, giving the Red Planet a much more complex interior than ...

For years, Mars has sat in an awkward middle ground, too geologically quiet to look like Earth. At the same time, it is too ...

Science has a funny way of humbling certainty. Most of us carry a mental picture of how Earth works that was assembled in ...

Researchers from the University of Oxford have uncovered evidence that Mars once hosted enormous, Earth-like magmatic systems ...

For decades, our picture of Mars was of a dead desert world. Its magnetic field exists only in sparse patches. Its lakes and ...

Scientists say the San Andreas and San Jacinto faults are more stressed than at any time in 1,000 years, raising questions about future California quakes.

New research finds the San Andreas and San Jacinto fault systems are in a “critically loaded” state, with stress levels that ...

A groundbreaking study reveals that Africa may be undergoing a monumental geological transformation, as researchers identify a potential new tectonic plate boundary forming in Zambia. By looking at ...

Earth’s mantle appears to be leaking a little along Central Africa. If this continues to develop, this rift could grow into a new tectonic plate boundary—splitting the African continent in half. In a ...

The Earth’s crust is constantly changing. It’s currently made of many huge rock slabs called tectonic plates—seven major ones along with many more smaller plates—that fit together like puzzle pieces ...