For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Miles Inside The Earth's Surface The insides of Earth remain as much of a mystery to experts as the outsides of the planet.

Almost 3,000 kilometers underground, a seismic mystery has been solved as earthquake waves anomalous behavior is finally ...

ETH Zurich scientists confirmed that solid rock flows deep inside Earth, solving a decades-old mystery about seismic waves.

Deep beneath our feet, around 2,700 kilometers below Earth’s surface, lies a region that has puzzled scientists for over five ...