Thermosphere

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The thermosphere is biggest of all the layers of the earth's atmosphere directly above the mesosphere and directly below the exosphere. Within this layer, ultraviolet radiation causes ionization. The International Space Station has a stable orbit within the upper part of the thermosphere, between 320 and 380 kilometers. Auroras also occur in the thermosphere.Named from the Greek ¿¿¿¿¿¿ (thermos) for heat, the thermosphere begins about 80 km above the earth. At these high altitudes, the residual atmospheric gases sort into strata according to molecular mass (see turbosphere). Thermospheric temperatures increase with altitude due to absorption of highly energetic solar radiation by the small amount of residual oxygen still present.

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Pagina's: 104, Paperback, Betascript Publishers