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What is the cosmic microwave background anisotropy?
CosmologyCMB
Quick Answer
CMB anisotropy is the tiny variation in temperature across the cosmic microwave background. These small differences are the fingerprints of the early Universeβs density fluctuations.
The Full Story
Although the cosmic microwave background is very uniform, it is not perfectly even. Tiny temperature differences, measured at levels of only about one part in 100,000, reveal the early seeds of structure in the Universe. Satellites such as COBE, WMAP, and Planck mapped these fluctuations in increasing detail. The anisotropies let cosmologists estimate the age, shape, and contents of the Universe with great precision.
Key Facts
1.CMB fluctuations are about one part in 100,000
2.COBE, WMAP, and Planck mapped them
3.They help determine the Universeβs age and composition
YouTube Angle
Suggested video title for this topic:
"Tiny ripples in the oldest light that reveal the whole cosmic story"