Scientists have identified another possible commonality between Earth and Mars: a solid inner core. Scientists have ...

A new study of decades worth of seismogram data shows that the surface of Earth’s iron and nickel core is more malleable than scientists thought.

For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet that sits some 3,000 miles (4,828 kilometers) below the surface.

For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet that sits some 3,000 miles (4,828 kilometers) below the surface.

A groundbreaking study reveals that the Moon has a solid inner core with a density comparable to iron, reshaping our ...

The next layer is the mantle, which makes up most of Earth's volume and is composed of dense, semi-solid rock. Then there is the outer core, made of liquid metal, and the inner core, a solid ball of ...

A major scientific breakthrough has settled a decades-old debate about the moon’s interior. Researchers have confirmed that ...

Well, the verdict is in. The Moon is not made of green cheese after all.

Similar to Earth's core, the core of Mars is expected ... the temperature in the Martian core is likely too high for a solid inner core to crystallize, but the possibility of an iron-sulfide ...