John C. Mather delivered his Nobel Lecture 8 December 2006, at Aula Magna, Stockholm University, where he was introduced by Professor Per Carlson, Chairman of the Nobel Committee for Physics.

Summary: The story of the COBE satellite mission began in 1974. The successful launch in 1989 was a landmark for modern cosmology. The spectrum of the cosmic microwave background radiation was shown to follow very precisely a black body form with a temperature of 2.725 K, giving strong support for the Big Bang theory of the Universe.

John Mather held his Nobel Lecture December 8, 2006, at Aula Magna, Stockholm University. He was presented by Professor Per Carlson, Chairman of the Nobel Committee for Physics.