PlzeÅ (Czech pronunciation: [ËplÌ©.zÉÉ²]), also called Pilsen in English and German, is a city in western Bohemia in the Czech Republic. About 90 kilometres (56 miles) west of Prague, it is the fourth most populous city in the Czech Republic.
The Chromosphere. Click on image for larger version. The chromosphere is an irregular layer above the photosphere where the temperature rises from 6000&degC to about 20,000&degC. At these higher temperatures hydrogen emits light that gives off a reddish color (H-alpha emission).
In the atmosphere Auroras usually occur in the ionosphere (the highest part of the atmosphere, between the thermosphere and the exosphere. The ionosphere gets its name because it is ionized by solar radiation.). We typically see auroras only in high-latitude areas above about 50 degrees (north or south).he 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 thermos â¦ phere, the outermost actual atmosphere.