How are stellar EM radiation formed?? I've read this in many books and sites... Any object above 0 K will emit EM radiation of all wavelengths... Now this is confusing me a lot... I mean, how for example a sun emit wavelength s of a Radio and it is the same sun which emits ultra violet and gamme rays.. How is it possible to emit all kind of wavelengths. Being particular, when we look at a star by prism method, how can we detect an O star which has it's peak wavelength beyond visible light i guess... Finally, why is a peak wavelength formed. Thanks in advance to whoever gives me a good reply!