alluding there to the measurement of cosmic background radiation it was found by accident in 1965 by arno penzias. yes and robert wilson they were creating a radio receiver and were puzzled by the noise it was picking up from all over the sky that's now interpreted as residual radiation from the time when the universe began. to day's background radiation is left over from the big bang see at the beginning the universe was extremely hot the radiation cooled as the universe expanded it can only be measured as firm a radiation which is not visible to. the coffee here in the coffee is hot as is the hot plate it's not we can't see it directly that's the problem it's this is obvious but if i drops of water on a hot plate i could make the heat visible or don't hear. the plank space satellite which was launched in 2009 delivered very accurate data on the cosmic background radiation. that taught us a lot about the early years of the universe and the rate at which it was then expanding. this cosmic background radiation is talking to us from the deepest depths of time. data from planck which seems to operat