the source of heating in the thermosphere is the absorption of highly energetic solar radiation.
the source of heating in the thermosphere is the absorption of highly energetic solar radiation.
the source of heating in the thermosphere is the absorption of?
highly energetic solar radiation
the thermosphere is the layer in the earth's atmosphere directly above the mesosphere  and below the exosphere. within this layer of the atmosphere, ultraviolet radiation causes photoionization/photodissociation of molecules, creating ions in the ionosphere. taking its name from the greek θερμός (pronounced "thermos") meaning heat, the thermosphere begins at about 80 km (50 mi) above sea level. at these high altitudes, the residual atmospheric gases sort into strata according to molecular mass (see turbosphere). thermospheric temperatures increase with altitude due to absorption of highly energetic solar radiation. temperatures are highly dependent on solar activity, and can rise to 1,700 °c (3,100 °f) or more. radiation causes the atmosphere particles in this layer to become electrically charged (see ionosphere), enabling radio waves to be refracted and thus be received beyond the horizon. in the exosphere, beginning at about 600 km (375 mi) above sea level, the atmosphere turns into space, although by the criteria set for the definition of the kármán line, the thermosphere itself is part of space.
thermosphere
jupiter's thermosphere is located at pressures lower than 1 μbar and demonstrates such phenomena as airglow, polar aurorae and x-ray emissions. within it lie layers of increased electron and ion density that form the ionosphere. the high temperatures prevalent in the thermosphere (800–1000 k) have not been fully explained yet; existing models predict a temperature no higher than about 400 k. they may be caused by absorption of high-energy solar radiation (uv or x-ray), by heating from the charged particles precipitating from the jovian magnetosphere, or by dissipation of upward-propagating gravity waves. the thermosphere and exosphere at the poles and at low latitudes emit x-rays, which were first observed by the einstein observatory in 1983. the energetic particles coming from jupiter's magnetosphere create bright auroral ovals, which encircle the poles. unlike their terrestrial analogs, which appear only during magnetic storms, aurorae are permanent features of jupiter's atmosphere. the thermosphere was the first place outside the earth where the trihydrogen cation () was discovered. this ion emits strongly in the mid-infrared part of the spectrum, at wavelengths between 3 and 5 μm; this is the main cooling mechanism of the thermosphere.
atmosphere of jupiter