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      the layer of gases surrounding a planet



Earth's atmosphere protects life on the planet.

Earth’s atmosphere has five layers.


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Layers of the upper atmosphere looked at from the edge, shown in colors ranging from red near the earth to blue towards space
This photograph of the colorful layers of Earth's upper atmosphere was taken from the space shuttle, looking sideways across Earth's atmosphere.
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Page Last Updated: July 14th, 2014
Page Editor: NASA Education