The radiation wavelengths emitted by sun are shorter than those emitted by earth. The sun emits a wide range of electromagnetic radiation, including visible light, ultraviolet (UV) radiation, and infrared (IR) radiation. The peak of the sun's radiation is in the visible light spectrum, with a wavelength of about 500 nanometers (nm). The earth, on the other hand, emits mostly IR radiation, with a peak wavelength of about 10 micrometers (µm). This difference in wavelength is due to the difference in temperature between the sun and the earth. The sun is much hotter than the earth, so it emits shorter wavelength radiation.