earth's mantle

Scientists have uncovered new evidence supporting the theory that bigger chunks of Theia may have sunk into the Earth over billions of years.

Theia Theory

Below the Indian Ocean, there's a giant "gravity hole" over one million square miles in size. Scientists may have figured out why it exists.

According to a new study, the Earth's inner core appears to have stopped spinning, and is changing its direction every 60 to 70 years or so.

Scientists discovered that the Earth's magnetic field fluctuated like clockwork every seven years, drifting westward at 900 mph around the equator.