Earth appears to be a chill blue planet, but deep down, it’s really a metalhead. Its outer core is mostly molten iron (and ...

(NewsNation) — The Earth’s inner core is changing shape and may be a little soft on the outside, scientific research suggests. A study published in Nature Geoscience this month evaluated ...

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 ...

Credit: NASA / Getty Images According to a new "holy grail" scientific discovery, the blazing-hot ball of metal at the center ... long been thought to be a solid iron center, recent research ...

Iron, a transition metal, has a higher melting point and a higher density than the non-transition metals.