How can Earths inner core be solid iron if it is like the temperature of the sun?

Question

Today I read a story in the WP relating to the rotation of earths “solid” inner iron core. I looked it up from a different source that confirmed it is solid as opposed to liquid. How can it be so hot and not be molten? Thank you!

In: 81

Answer 1

Thank you all. It seems obvious the way you all explain it.