stratosphere--
By Naseem Ahmad-GPH
The stratosphere maintains an almost uniform temperature due to the absorption of ultraviolet radiation by the ozone layer, which causes a temperature inversion where the temperature increases with altitude.
The stratosphere is the layer of the atmosphere that maintains an almost uniform horizontal temperature. This is due to the presence of the ozone layer, which absorbs and scatters incoming solar radiation, causing temperatures to remain stable at different altitudes.
There's almost no atmosphere and no hydrosphere to buffer the temperature changes like on earth.
Within the Solar System, that would probably be Venus, with a temperature of almost 500 °C. Mercury is quite hot, too, but it has no atmosphere to speak of.
what atmosphere has almost no molcules
The main reason is that Mercury has almost no atmosphere which would hold the heat in. So the temperature on the side which is facing away from the Sun can plummet.
The lack of atmosphere on a planet can result in extreme temperature variations between day and night, as well as high levels of radiation from the sun. Without an atmosphere to trap heat, temperatures can drop drastically at night. Additionally, the absence of atmospheric pressure can make it difficult for liquid water to exist on the planet's surface.
A mouse would die almost immediately in Jupiter. The temperature is about -110°C and the atmosphere doesn't have any oxygen for it to breathe.
Mercury
The troposphere holds almost all of the water vapor in the atmosphere as well as approximately 75-80% of the total mass of the atmosphere.
troposphere
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