The layers of Earth's atmosphere, from closest to Earth to exosphere, are as follows:
1. Troposphere: This is the lowest layer, extending from the Earth's surface up to an altitude of about 7-20 kilometers (4-12 miles). Weather occurs largely in this layer, and it contains about 75% of the atmosphere's mass.
2. Stratosphere: The stratosphere exists above the troposphere and extends from about 20-50 kilometers (12-31 miles) above the Earth's surface. It contains the ozone layer, which absorbs and blocks much of the Sun's harmful ultraviolet (UV) radiation.
3. Mesosphere: Above the stratosphere lies the mesosphere, reaching approximately 50-85 kilometers (31-53 miles) in altitude. This layer is characterized by a decrease in temperature with increasing altitude, and it is where meteors burn up upon entry into the atmosphere.
4. Thermosphere: Extending from about 85 kilometers (53 miles) upward, the thermosphere is the next layer. Although it has an extremely low density of molecules, it experiences intense heating from the Sun's radiation. Temperatures in this layer can reach thousands of degrees Celsius, but it would not feel hot to an observer due to the low density of particles.
5. Exosphere: The outermost layer of Earth's atmosphere is the exosphere, which gradually extends upward into space. It starts around 600 kilometers (370 miles) above the Earth's surface and continues indefinitely. The exosphere contains mostly low-density hydrogen and helium gases, and it gradually merges with the vacuum of space.
Earth's atmosphere is divided into layers order these layers of the atmosphere from closest to Earth to the exosphere
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