The Earth's inner core weighs about 1.53E+22 kg. CALCULATIONS: The inner core is spherical with a diameter of about 1,250 km (780 miles). -- Its volume (V = 4/3πr3) is about 1 Billion km cubed...
The temperature of the inner core can be estimated using experimental and theoretical constraints on the melting temperature of impure iron at the pressure (about 330 GPa) of the inner core boundary,...
The inner core of the earth is thought to be solid. It is extremely hot there, but the pressure prevents liquid from forming. We believe this based on the way sound travels through the earth, and...