Do gas giants actually have a solid core? If so, how big are they usually?

Question

Do gas giants actually have a solid core? If so, how big are they usually?

In: 343

Answer 1

How big: One estimate suggests that Jupiter has a core one and a half times the size of Earth, but thirty times heavier.

But we’re not really sure, and as others have said, the dividing line between dense gas and solid is pretty blurry.