What are the main layers of Earth's atmosphere in order?

The main layers of Earth's atmosphere, in order from the surface upwards, begin with the troposphere, followed by the stratosphere, then the mesosphere, and finally the thermosphere. This order is based on the characteristics and behaviors of each layer.

The troposphere is the lowest layer, where weather events occur and the majority of the atmosphere’s mass is found. As we move upward to the stratosphere, it contains the ozone layer which protects living organisms by absorbing harmful ultraviolet radiation. Next is the mesosphere, which is where temperature decreases with altitude and is the layer where meteors burn up upon entering the atmosphere. Finally, the thermosphere is characterized by high temperatures and is where the auroras occur, with a very thin atmosphere at high altitudes.

This sequence is crucial for understanding the structure of the Earth's atmosphere, as each layer has distinct properties and functions that are essential for maintaining life and facilitating climate and weather patterns.