The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

A major scientific breakthrough has settled a decades-old debate about the moon’s interior. Researchers have confirmed that the moon has a solid inner core, similar to Earth’s, composed of iron with a ...

The deepest layer is a solid iron ball, about 1,500 miles (2,400 kilometers) in diameter. Although this inner core is white hot, the pressure is so high the iron cannot melt. The iron isn't pure ...

Better yet, it’ll have you flushing your irons like never before. The last must for solid iron strikes is to have your pelvis turned more than your chest at impact. This move is also seen in 100 ...

But while the center of our planet has long been thought to be a solid iron center, recent research theorized that a portion of the dense inner core might actually be liquid, as well. The new ...

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 ...