The Mesosphere is the layer where meteors burn up, and it extends from about 50 km to 80 km (31-50 miles) ...

It's the thinnest of Earth's three main layers, yet humans have never drilled all the way through it. As you descend, you'd soon reach the depth of the Paris Catacombs, the deepest metro station ...

These days, I’m a geophysicist and know a lot more about Earth’s structure. It has three main layers: The outer skin, called the crust, is a very thin layer of light rock. Its thickness ...