Buried nearly 1,800 miles below Earth’s surface are two vast, continent-sized structures that continue to challenge our ...

Deep beneath Earth’s surface, two enigmatic giant blobs have puzzled scientists for decades. Now, new research offers fresh ...

New research suggests that two mysterious, continent-sized lava puddles deep within Earth's mantle may provide insights into the planet's early history and the origin of life.

Astronomers say they have spotted, for the first time, what appears to be the exposed core of a gas giant planet that has shed -- or never found -- its gaseous atmosphere. A team lead by the ...

Exoplanets are planets outside Earth's solar system. In 1995, a gas giant named 51 Pegasi b, which orbits a star similar to Earth's sun, etched its name in history as the first exoplanet ever ...