By analyzing seismic waves from earthquakes from the 1960s, researchers from Peking University deduced that the Earth's inner core has experienced a b ...

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 ...

Scientists have confirmed that the Moon has a solid inner core with a density similar to iron. The core's structure mirrors that of Earth's, with a fluid outer layer and solid inner core ...

To gig deep into the Earth's mysteries isn't just science fiction. The video highlights one of humanity's boldest attempts at ...

The energy is derived from the center of the Earth, but scientists are certain the core is very, very slowly cooling off. Keeping the center of the Earth hot are two sources of “fuel ...

Inner core The inner core is 2900 km below the Earth’s surface, in the centre of the Earth, and is the hottest layer. It is spherical and solid and made up of iron and nickel. Its temperatures ...

Scientists estimate there are ~1 septillion (1 followed by 24 zeros) planets in the observable universe. This figure is based ...

Earth's innermost layer is called the core ... of 9,000 degrees Fahrenheit (5,000 degrees Celsius). In the inner core, the pressure is so massive that the ultra-hot metal turns solid.

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

The findings confirm that helium could stay locked in Earth's solid inner core for a long time, Olson told Live Science, but he cautioned that only 4% of the core is solid.