The three main layers of the Earth's atmosphere are:
-
Troposphere: This is the lowest layer, where weather occurs and where most of the atmosphere's mass is found. It extends from the Earth's surface up to about 8 to 15 kilometers (5 to 9 miles) high, depending on the latitude and weather conditions.
-
Stratosphere: Located above the troposphere, the stratosphere extends from about 15 kilometers (9 miles) to about 50 kilometers (31 miles) above the Earth's surface. This layer contains the ozone layer, which absorbs and scatters ultraviolet solar radiation.
-
Mesosphere: The mesosphere spans from about 50 kilometers (31 miles) to about 85 kilometers (53 miles) above the Earth. This layer is where temperatures decrease with altitude, and it is also where most meteorites burn up upon entering the atmosphere.
Above the mesosphere, there are additional layers, including the thermosphere and exosphere, but the troposphere, stratosphere, and mesosphere are considered the three main layers.