 Physics
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Physics Department |
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Cosmic Microwave Background
The cosmic microwave background radiation is
remnant light from the Big Bang. The distribution
of the CMBR reveals many details of the past,
present and future universe.
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The universe is smooth to one part in 100,000. This is a
picture of the roughness of the universe at microwave
frequencies when it was about 100,000 years old. The
fluctuations in the microwave radiation are correlated with
fluctuations in the matter density which later grew into
galaxies. By studying the pattern of the microwave background
fluctuations, cosmologists can deduce information about the
very young universe and the Big Bang.
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