Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...

Earth’s inner core is changing shape, scientists have found.

Researchers found evidence that the Earth's inner core is changing shape, suggesting unseen processes affecting its movement ...

three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball, about 1,500 miles (2,400 kilometers) in diameter.

text{volume}}\), the liquid will have slightly lower density. The density of solid iron = 7.8 g/cm 3 The density of liquid iron = 6.9 g/cm 3 A substance evaporates when it changes from the liquid ...