- #1
TrickyDicky
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does the CMB radiation fill the universe empty space completely homogenously and isotropically?
Chronos said:WMAP says it is pretty homogenis - at least within .001 percent.
Cosmic Microwave Background Radiation is a type of electromagnetic radiation that is uniformly distributed throughout the universe. It is a remnant of the thermal radiation that was released shortly after the Big Bang and is considered to be the oldest light in the universe.
The CMB was first discovered in 1964 by two scientists, Arno Penzias and Robert Wilson, who were studying radio waves. They noticed a constant background noise in their radio telescope that could not be explained by any known sources. After further research, they realized that this noise was actually the CMB radiation.
The CMB provides evidence for the Big Bang theory and helps to support the idea that the universe is expanding. It also helps us understand the age and composition of the universe, as well as the distribution of matter and energy within it.
The CMB is considered to be homogeneous because it has a nearly uniform temperature throughout the universe, with only very small variations. It is also considered to be isotropic because it appears the same in all directions, regardless of where it is observed from.
The CMB is used in a variety of ways in cosmology research. It can be used to study the early universe and the conditions that existed shortly after the Big Bang. It can also be used to study the large-scale structure of the universe and the effects of dark matter and dark energy. Additionally, it is used to test and refine various theories about the origin and evolution of the universe.