Beneath Earth’s molten outer core is a dense central region — the inner core, a compact sphere made of an iron and light-element alloy squeezed by more than 3.3 million atmospheres and heated to temperatures comparable to the Sun’s surface. For…
Beneath Earth’s molten outer core is a dense central region — the inner core, a compact sphere made of an iron and light-element alloy squeezed by more than 3.3 million atmospheres and heated to temperatures comparable to the Sun’s surface. For…