That region of the Earth's atmosphere above the mesosphere where the neutral temperature increases with height It begins at the mesopause at about 80-85 km and extends to the exosphere where the temperature regime becomes isothermal
the outermost layer of the atmosphere in physical contact with extraterrestrial space
One of two regions into which the ocean depths are sometimes divided according to temperature, the other being the psychrosphere The thermosphere is the upper regions of the ocean where the temperature is greater than 10° C This coincides with the ocean troposphere
layer of the Earths atmosphere directly above the mesosphere and directly below the exosphere
the atmospheric shell extending from the top of the mesosphere to outer space It is a region of more or less steadily increasing temperature with height, starting at 70 or 80 km
A thermal classification, it is the layer of the atmosphere located between the mesosphere and outer space It is a region of steadily increasing temperature with altitude, and includes all of the exosphere and most, if not all, of the ionosphere
The region in planetary atmospheres above the major temperature minimum, in the mesosphere, to outer space In the Earth's atmosphere, it starts at an altitude of about 80 kilometers and has molecular temperatures that rise into the thousands of degrees This is the domain of aurorae The molecular densities are so low that the gas is unable to cool through infrared radiative cooling to space due to the infrequency of molecular (in particular, carbon dioxide) cooling
Atmospheric layer above the mesosphere (above 85 kilometers) where air temperatures rise rapidly with height The thermosphere is the hottest layer in the atmosphere In the thermosphere, gamma, X-ray, and specific wavelengths of ultraviolet radiation are absorbed by certain gases in the atmosphere The absorbed radiation is then converted into heat energy Temperatures in this layer can get as high as 1300-1800 degrees Celsius