Graphical timeline of the Big Bang

This timeline of the Big Bang shows a sequence of events as currently theorized by scientists.

Part of a series on
Physical cosmology
Big Bang · Universe Age of the universe Chronology of the universe
Early universe Inflation · Nucleosynthesis Backgrounds Gravitational wave (GWB) Microwave (CMB) · Neutrino (CNB)
Expansion · Future Hubble's law · Redshift Expansion of the universe FLRW metric · Friedmann equations Inhomogeneous cosmology Future of an expanding universe Ultimate fate of the universe
Components · Structure Components Lambda-CDM model Dark energy · Dark matter Structure Shape of the universe Galaxy filament · Galaxy formation Large quasar group Large-scale structure Reionization · Structure formation
Experiments Black Hole Initiative (BHI) BOOMERanG Cosmic Background Explorer (COBE) Dark Energy Survey Planck space observatory Sloan Digital Sky Survey (SDSS) 2dF Galaxy Redshift Survey ("2dF") Wilkinson Microwave Anisotropy Probe (WMAP)
Scientists Aaronson Alfvén Alpher Copernicus de Sitter Dicke Ehlers Einstein Ellis Friedmann Galileo Gamow Guth Hawking Hubble Huygens Kepler Lemaître Mather Newton Penrose Penzias Rubin Schmidt Smoot Suntzeff Sunyaev Tolman Wilson Zeldovich List of cosmologists
Subject history Discovery of cosmic microwave background radiation History of the Big Bang theory Timeline of cosmological theories
Category Astronomy portal

It is a logarithmic scale that shows ${\displaystyle 10\cdot \log _{10}}$ second instead of second. For example, one microsecond is ${\displaystyle 10\cdot \log _{10}0.000001=10\cdot (-6)=-60}$. To convert −30 read on the scale to second calculate ${\displaystyle 10^{-{\frac {30}{10}}}=10^{-3}=0.001}$ second = one millisecond. On a logarithmic time scale a step lasts ten times longer than the previous step.