Here's a breakdown of the layers of the atmosphere:

* Troposphere: This is the lowest layer, where we live, and contains most of the atmosphere's mass. It extends up to about 12 km.

* Stratosphere: This layer contains the ozone layer, which protects us from harmful UV radiation. It extends from about 12 km to 50 km.

* Mesosphere: This layer is where most meteors burn up. It extends from about 50 km to 85 km.

* Thermosphere: This layer is where the International Space Station orbits. It extends from about 85 km to 600 km.

* Exosphere: This is the outermost layer, where the atmosphere gradually fades into space. It extends from about 600 km upwards.