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).
Magnetosphere= the region of space around a planet in which the motion of charged particles is dominated by the planet's magnetic field . Without the magnetosphere, auroras would be more common and widespread because the solar wind would be striking the Earth constantly, although only on the daylight side.