Evolution of the Universe

  title={Evolution of the Universe},
  author={Ralph A. Alpher and Robert K. Herman},
IN checking the results presented by Gamow in his recent article on “The Evolution of the Universe” [Nature of October 30, p. 680], we found that his expression for matter-density suffers from the following errors: (1) an error of not tailing into account the magnetic moments in Eq. (7) for the capture cross-section, (2) an error in estimating the value of α by integrating the equations for deuteron formation (the use of an electronic analogue computer leads to α = 1), and (3) an arithmetical… 

An analysis of the derivation of Friedmann's Equation

In the introductive section a deeper specification is made of the physical meaning of the terms in the Friedmann Equation (FE). After that, assuming validity of Mach's Principle, it is deduced

"All that matter ... in one Big Bang ...," & other cosmological singularities

The first part of this paper contains a brief description of the beginnings of modern cosmology, which, the author will argue, was most likely born in the Year 1912. Some of the pieces of evidence

Anisotropy of the Cosmic Blackbody Radiation

The universe is filled with thermal radiation having a current temperature of 2.75 K, and this radiation furnishes strong evidence that the Big Bang cosmology best describes the authors' expanding universe from an incredibly hot, compacted early stage until now.

Big bang nucleosynthesis

Abstract We present an overview of the standard model of big bang nucleosynthesis (BBN), which describes the production of the light elements in the early universe. The theoretical prediction for the

Calculation of the Moment of the Beginning of the Existence of Light in the Universe

  • C. Mercier
  • Physics, Education
    Applied Physics Research
  • 2022
The apparent age of the universe is about T » 13.56´109 years. Light is part of our everyday life, but it has not always existed. According to physicists, it began to exist about ~360 000 to 380 000

The origin of matter and structure in the universe.

  • J. García-Bellido
  • Physics
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 1999
With the observations that will soon become available in the next millennium, the authors will be able to test the validity of the inflationary paradigm, and determine, with unprecedented accuracy, the parameters of a truly standard model of cosmology.

The Evolution of the Universe

With the recent measurements of temperature and polarization anisotropies in the microwave background by WMAP, we have entered a new era of precision cosmology, with the cosmological parameters of a

General Relativity : a possible solution to the Dark Energy problem and an alternative to Big Bang cosmology

Observations of an apparent acceleration in the expansion rate of the Universe, derived from measurements of high-redshift supernovae, have been used to support the hypothesis that the Universe is



Expanding universe and the origin of elements

It is generally agreed at present that the relative abundances of various chemical elements were determined by physical conditions existing in the universe during the early stages of its expansion,

The Evolution of the Universe

It is concluded first of all that the relative abundances of various atomic species must represent the most ancient archæological document pertaining to the history of the universe, and that it must have been established during the earliest stages of expansion.