Earth’s core reaches temperatures similar to the surface of the Sun, yet our planet remains solid on the outside. The key lies in unimaginable pressure. Deep below the surface, gravity compresses the inner layers so intensely that even molten materials are forced into solid or semi-solid states. This extreme pressure traps the heat, preventing it from escaping upward. The mantle and crust act as giant insulating layers, keeping Earth’s surface cool and livable. Without this pressure, our world w