The mesosphere is the coldest layer of the atmosphere
Four layers of the atmosphere
The atmosphere comprises layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere.
- Troposphere: It is the lowest layer of our atmosphere. We, humans, live in the troposphere, and nearly all weather occurs in this lowest layer.
- Stratosphere: The stratosphere extends from the top of the troposphere to about 50 km (31 miles) above the ground.
- Mesosphere: Above the stratosphere is the mesosphere. The coldest temperatures in Earth’s atmosphere, about -90° C (-130° F), are found near this layer’s top. The air in the mesosphere is far too thin to breathe.
- Thermosphere: High-energy X-rays and UV radiation from the Sun are absorbed in the thermosphere