This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
the thinner the gas (less atoms per m³), the less temperature it transfers
athmosphere filters light: which is why we see the sky as blue and why a very clear hot day has a high UV index (though most of the dangerous radiation gets reflected)
space temperature works via radiation; the habitable band around earth has 80 to 120°C in direct sun exposure, while it’s freezing -120 to -150°C in earths shadow; mainly through infrared radiation
I guess the short version is; a balance between infrared reflectivity and direct transfer, with heat house effect also playing a role. But the ground absorbing the majority of the radiation/temperature, is the main reason in the Troposphere.
Yeah, it’s not as simple as the comments suggest.
I think a good start are those articles: Athmosphere of Earth, Albedo, Greenhouse effect, together with the facts
I guess the short version is; a balance between infrared reflectivity and direct transfer, with heat house effect also playing a role. But the ground absorbing the majority of the radiation/temperature, is the main reason in the Troposphere.