Astrophysics
All contributors in Astrophysics
Are you and everything around you expanding as the Universe balloons outward? more...
All feature articles in Astrophysics
The Planck Time and the Big Bang
By:
Paul A. Heckert
In the big bang theory, the Planck time is the first miniscule fraction of a second after the initial big bang. The universe had just come into being. more...
GUTS and Inflation in the Big Bang
By:
Paul A. Heckert
Shortly after the initial big bang, the universe went through a period of very rapid expansion called the inflationary period. more...
Origin of Matter in the Universe
By:
Paul A. Heckert
In the big bang theory, matter formed in the early universe as elementary particles including protons, electrons, and neutrons. more...
Nucleosynthesis in the Big Bang
By:
Paul A. Heckert
The lightest four elements on the periodic table were made in nuclear fusion reactions shortly after the big bang. more...
Very Brief History of the Universe
By:
Paul A. Heckert
A brief overview of the history of the universe from its origin in the big bang to the origin of life on Earth and how the needed raw materials for life formed. more...
Spectrum of the Andromeda Galaxy
By:
Paul A. Heckert
Vesto M. Slipher was the first astronomer to measure the spectrum of an external galaxy. His work led to Hubble's discovery that the universe is expanding. more...
Discovering The Expanding Universe
By:
Paul A. Heckert
Edwin Hubble along with his assistant Milton Humason made the observations of distant galaxy redshifts that showed the expansion of the universe. more...
All contributing articles in Astrophysics