Diffuse interstellar clouds have long been thought to be relatively devoid of molecules,
because of their low densities and high radiation fields. However, in the past ten years or so …

Kenneth Lang's classic work Astrophysical Formulae.(Vol. I and II) is now available as soft
cover edition in a set. This volume is a reference source of fundamental formulae in physics …

In this paper we continue the investigation initiated by Weymann as to the reason why the
spectrum of the residual radiation deviates from a Planck curve. We shall consider the …

On the Synthesis of Elements at Very High Temperatures ADS Classic is now deprecated. It will
be completely retired in October 2019. This page will automatically redirect to the new ADS …

The Isotropy of the Universe ADS Classic is now deprecated. It will be completely retired in
October 2019. This page will automatically redirect to the new ADS interface at that point …

Based on observational data, the spectra of cosmic radio, microwave, infrared, optical, and x-
ray photons are estimated. The absorption probability per unit path length by the process of …

This paper contains results of a calculation of the He3, He', and deuterium abundances
produced in the early stages of expansion of the Universe. It is assumed in the calculation …

Throughout most of recorded history, matter was thought to be composed of various
combinations of four basic elements; earth, air, fire, and water. Modern science has replaced …

" The scientific potential of y-ray astronomy has long been recognized from a theoretical
standpoint by investigators in the fields of cosmic-ray research and high-energy …

The following conclusion is based on the as-sumption that sometime in the past the
temperature and density of the universe were so high that an equilibrium between particle …