Big bang theory
Pasachoff, Jay M. Hopkins Observatory, Williams College, Williamstown, Massachusetts.
Last reviewed:June 2018
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- Big bang theory, published 2017:Download PDF Get Adobe Acrobat Reader
- Big bang theory, published June 2014:Download PDF Get Adobe Acrobat Reader
- Chronology of the early universe
- Planck epoch
- Grand unification epoch
- Inflationary epoch
- Quark epoch
- Hadron epoch and antimatter annihilation
- Big bang nucleosynthesis
- Study of the cosmic microwave background
- Other evidence for the big bang
- Expansion of the universe
- Age of stars
- Cosmic evolution after recombination
- Links to Primary Literature
- Additional Readings
The theory that the universe began in a hot, dense state and has since expanded and cooled. The big bang is the generally accepted cosmological theory for the origin, properties, and evolution of the universe (Fig. 1). See also: Cosmology; Universe
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