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 ...

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 ...

Researchers have confirmed that the moon has a solid inner core, similar to Earth’s, composed of iron with a density of about ...