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 Planck epoch Grand unification epoch Electroweak epoch Quark epoch Hadron epoch Lepton epoch Photon epoch Big Bang nucleosynthesis Inflation Dark Ages Stelliferous Era Backgrounds Cosmic background radiation (CBR) Gravitational wave background (GWB) Cosmic microwave background (CMB) · Cosmic neutrino background (CNB) Cosmic infrared background (INB)
Expansion · Future Hubble's law · Redshift Expansion of the universe Accelerating expansion of the universe Comoving and proper distances FLRW metric · Friedmann equations Inhomogeneous cosmology Timeline of the far future Future of an expanding universe Ultimate fate of the universe Heat death of the universe Big Rip Big Crunch Big Bounce
Components · Structure Components Lambda-CDM model Baryonic matter Exotic matter Degenerate matter Neutronium QCD matter Strange matter Negative matter Energy Negative energy Zero-point energy Vacuum energy Radiation Background radiation Dark energy Quintessence Phantom energy Dark matter Cold dark matter Warm dark matter Mixed dark matter Hot dark matter Light dark matter Self-interacting dark matter Scalar field dark matter Dark radiation Dark fluid Dark flow Mirror matter Structure Shape of the universe Reionization · Structure formation Galaxy formation Large-scale structure Large quasar group Galaxy filament Supercluster Galaxy cluster Galaxy group Local Group Galaxy Dark matter halo Star cluster Solar system Planetary system Void
Experiments BOOMERanG Cosmic Background Explorer (COBE) Dark Energy Survey Euclid Illustris project Vera C. Rubin Observatory Planck space observatory Sloan Digital Sky Survey (SDSS) 2dF Galaxy Redshift Survey ("2dF") UniverseMachine Wilkinson Microwave Anisotropy Probe (WMAP)
Scientists Aaronson Alfvén Alpher Bharadwaj Copernicus de Sitter Dicke Eddington Ehlers Einstein Ellis Friedmann Galileo Gamow Guth Hubble Lemaître Linde Mather Newton Penzias Rubin Schmidt Schwarzschild Smoot Starobinsky Steinhardt Suntzeff Sunyaev Tolman Wilson Zeldovich
Subject history Discovery of cosmic microwave background radiation History of the Big Bang theory Religious interpretations 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.