cosmic infrared background (CIB)
Measurements of the CIB by the 2MASS telescope, published in 2002, confirmed earlier estimates by COBE (Cosmic Background Explorer) that the CIB is two to three times brighter than expected based on extrapolations of observed galaxies. The brightness indicates that there was an incredible burst of star formation during the Universe's youth. It also supports the idea that a great deal of dark matter was present, pulling gas together shortly after the Universe's birth, and enabling the first stars and galaxies to form.
The CIB is one of several components of the cosmic background radiation.
Related category COSMOLOGY
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