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The aurora borealis and aurora australis occur in the Ionosphere from around 100 km up. This layer of the atmosphere is also called the Thermosphere.
Well let me start with this, there are 5 layers on earths atmosphere, the Troposhere, Strotosphere, Mesosphere, Thermosphere, and Exosphere. The main layer is the Troposphere because that is were our weather mainly happens.
In the upper mesosphere and the lower thermosphere, gas particles become electrically charged. Because these charged particles are called ions, this part of the thermosphere is called the ionosphere. In polar regions these ions radiate energy as shimmering lights called auroras, usually in latitudes above 50 degrees. The Aurora Borealis and its southern counterpart the Aurora Australis are formed high in the atmosphere in the ionosphere, which is sometimes considered as part of the thermosphere, the outermost actual atmosphere. Above this layer, the exosphere has so few molecules that they can escape into space. For more information visit the question "What causes the Aurora Borealis?"
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Mesosphere, in a portion toward the top of this layer called the mesopause - about 50 - 55 miles up. Here the temperatures can be as low as 100'C
because temperatures increase steadily with altitude.
Mesosphere
The lower part of the thermosphere that begins 400 kilometers above the surface of the earth is called the ionosphere. The highest part of the thermosphere is called the exosphere.
The last layer of the atmosphere is called the thermosphere. They vary outer edge of the thermosphere is an area called the ionosphere.
The layer of the atmosphere that contains the ionosphere and exosphere is called the thermosphere. The exosphere is at the top and the ionosphere is at the bottom.
thermosphere
It is called the thermosphere.
Not sure about it. But I remembered this layer of the atmosphere called the ionosphere or the thermosphere.
The hottest outer area of the Earth's atmosphere is called the Thermosphere.
The five layers are called Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
The hottest outer area of the Earth's atmosphere is called the Thermosphere.
Troposphere, stratosphere, mesosphere, thermosphere (containing ionosphere), exosphere.