ΛCDM Graphical History
ΛCDM Model of Cosmology
Image Credit: Adaptation of original NASA WMAP Science Team image
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We illustrate a brief and simplified picture of theorized stages in the evolution of the universe, to provide a context for discussing ΛCDM parameters.
In this picture, the infant universe is an extremely hot, dense, nearly homogeneous mixture of photons and matter, tightly coupled together as a plasma. An approximate graphical timeline of its theoretical evolution is shown in the figure above, with numbers keyed to the explanatory text below.
Contributed by the NASA LAMBDA Archive Team.