Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

Long before life thrived in Earth’s oceans, the planet’s magnetic field became disorganized. Deep within the ancient rocks of ...

A new geological model revolutionizes a century of theories: a rigid wedge of mantle keeps the Himalayas standing.

The updated version of the World Magnetic Model was released on Dec. 17, with a new prediction of how the magnetic north pole will shift over the next five years. Here's why it was changed. When you ...

(The Hill) – The formation of the Earth may have looked more like a fast, inevitable landslide than like a slow series of occasional cataclysms, as scientists have long theorized, according to ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...

As ecosystem engineers, beavers build resilience into the landscape. Above ground, we can see changes wrought by beaver ponds ...

Astronomers now understand that water-rich planets can form internally, even close to stars. A new study reveals that ...