Earth’s core burns at temperatures similar to the surface of the Sun, yet our planet doesn’t melt. The secret lies in Earth’s layered structure. The core’s extreme heat is locked beneath thousands of kilometers of dense rock, acting like a giant thermal shield. The solid crust and thick mantle insulate the surface, preventing the intense energy below from escaping. This natural barrier keeps Earth stable, cool enough for oceans, life, and atmosphere to exist. Without these protective layers, our

'New hidden world' discovered in Earth's inner core