[CurlyDave]

It is amazing that after 5 Billion years since it’s birth, planet earth is still 90% molten Lava in it’s belly.

Heat is constantly being produced by the little bit of radioactivity in the earth.

I suspect that 90% molten is a significant exaggeration.

[neverevergiveup]

"It is amazing that after 5 Billion years since it’s birth, planet earth is still 90% molten Lava in it’s belly.

Tells you something about how brief our time on Earth is.

[entropy12]

7920 miles dia of planet earth
Earth’s crust is 5 miles deep under oceans, and 25 miles under continents.

Volume of sphere = 4/3 x Pi x R**3

Volume below the rocky crust based on average diameter of
7920 - 30 = 7890 miles

Which then computes the earth’s crust as 1.132% of
earths’s total volume.

Which means 98.868% of earth is below the solid crust outer shell.