Why does the sun emit higher frequency radiation than the earth does?

The sun emits higher frequency radiation than the Earth because it has a much higher surface temperature, around 5,500 degrees Celsius (9,932 degrees Fahrenheit). According to Wien's displacement law, the peak wavelength of radiation emitted by a black body is inversely proportional to its temperature; thus, the sun radiates primarily in the visible and ultraviolet spectrum. In contrast, the Earth, with a much lower average temperature of about 15 degrees Celsius (59 degrees Fahrenheit), emits radiation primarily in the infrared spectrum, which has longer wavelengths and lower frequencies.