The upper part of the thermosphere is called the Ionosphere
A+ Magnetosphere
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The upper portion of the thermosphere is called the exosphere. It is the outermost layer of Earth's atmosphere, extending from the thermosphere to outer space. In this region, the air is extremely thin, and particles are so sparse that they can travel hundreds of kilometers without colliding with one another. The exosphere is where satellites orbit and is characterized by very high temperatures.
The thermosphere is divided into two layers: the lower thermosphere (at about 80-550 km altitude) and the upper thermosphere (above 550 km altitude). The upper thermosphere is where most of the auroras occur due to interactions with solar radiation.
thermosphere
thermosphere is the region of the upper atmosphere.
The thermo pause
The upper portion of a fraction is called the numerator.
The upper portion of your heart contains the atria, both right and left.
England controlled the upper portion and the United States controlled the lower portion. The Upper Portion of Oregon eventually became part of Canada.
The upper layer of the atmosphere is called the thermosphere because temperatures in this region can reach very high values, up to thousands of degrees Celsius. This is due to the absorption of solar radiation by gases in the thermosphere. Despite the high temperatures, the thermosphere would not feel hot to our skin because the air density is so low.
Thermosphere
ozone