Cosmic Microwave Background is Electromagnetic Fog

The cosmic microwave background (CMB) is believed to be the residual effect of an alleged primordial explosion and as such is the only evidence supporting the big bang hypothesis. However, precise measurements by the Cosmic Background Explorer satellite (COBE) indicate that the CMB is blackbody radiation most probably caused by interstellar dust. The CMB is smooth and looks the same in all directions for the same reason that a fog looks smooth and uniform in all directions. The CMB appears as an electromagnetic fog on optical telescopes and as a static hum on radio telescopes.