Thermosphere gas and the ionospheric plasma. The International Space Station orbits the Earth within the middle of the thermosphere, between . It is convenient to separate the atmospheric regions according to the two temperature minima at about 12 km altitude (the tropopause) and at about 85 km (the mesopause) (Figure 1). The thermosphere (or the upper atmosphere) is the height region above 85 km, while the region between the tropopause and the mesopause is the middle atmosphere (stratosphere and mesosphere) where absorption of solar UV radiation generates the temperature maximum near 45 km altitude and causes the ozone layer. The density
Stratosphere: Conquest of the Skies Stratosphere: Conquest of the Skies Stratosphere: Conquest of the Skies is a Vehicular combat game and also a real-time strategy PC game, developed by Kodiak Interactive and published by Ripcord Games in 1998. Stratosphere focuses on floating island battles which players control. Gameplay consist of the player controlling a single floating island which are called flying fortresses in the game. These fortresses float because they are built from 'floatstones' which can be collected from mountainsides and also from other fortresses after damaging them. There are three types of floatstones each used to build different structures on the fortress. Extra land