Where is long-wavelength radiation created?

The sun releases radiation in form of short-wave.
They are usually more energetic and with short wavelength and a high frequency.
When they interact with materials on the earth, they are radiated back as long-wavelength radiation that usually causes heat.
Ultraviolet rays and other high energy waves are emitted from the sun because it is a very hot body.
When these radiations enters the earth, they are re-radiated back as long waves with lower energy.
Earth is cooler than the sun
When some of the short waves for example, the ultraviolet rays gets to the surface, it is absorbed and re-radiated back.
When the short waves are absorbed, they lose some of their their energy to the earth surface.
The remainder is radiated back as less energetic long waves.
The hotter a body is, the more energetic the radiation it releases.

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