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Einstein’s general relativity is a satisfactory theory of gravitation, and it provides a space-time structure whenever the matter distribution is given. Thus, if the average distribution of matter in the universe is put into Einstein’s field equations, the average space-time structure of the whole universe may be deduced. This is a very interesting exercise, and it is part of the subject of cosmology. Cosmology is the study of the dynamical structure of the universe and seeks to answer questions regarding the origin, the evolution, and the future behavior of the universe as a whole. Historically, after establishing his General Theory of Relativity in 1916, Einstein promptly applied his theory to problems in cosmology and published his first paper on relativistic cosmology in 1917. At that time, cosmology was the only field in which the significance of general relativity could be fully manifested.

In this chapter and in the following chapters, we will be studying cosmology. Cosmologists piece together the observed information about the universe into a selfconsistent theory or model that describes the nature, origin, and evolution of the universe.

Keywords

Cosmic Background Radiation Globular Cluster Blackbody Radiation Young Star Helium Content 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Gulkis S, Lubin PM, Meyer SS, Silverberg RF January, 1990. The cosmic background explorer. Scientific American, January, 1990 (USA)Google Scholar
  2. Harrison ER (1981) Cosmology, the Science of the Universe (Cambridge University Press UK)Google Scholar

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© Springer Science+Business Media, LLC 2008

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