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    Big Bang Cosmos Simulator

    Journey through 13.8 billion years of cosmic evolution. From the Planck epoch to the present day.

    Time:

    0.1 × 10⁻⁴³ s

    PlanckInflationHadronsCMBFirst StarsNow
    Speed:

    Temperature

    1.5 × 10³² K

    Scale Factor

    1.52e-33

    Hubble H(t)

    5.0e+43 s⁻¹

    Era

    Planck Epoch

    Planck Epoch

    All four fundamental forces unified. Physics as we know it breaks down.

    Key Events

    • •Singularity
    • •Quantum gravity dominates
    • •Space-time foam

    Physics

    Unknown physics
    No particles yet
    All forces unified

    Cosmic Timeline

    Planck Epoch

    0.0 × 10⁻⁴³ s → 1.0 × 10⁻⁴³ s

    Grand Unification

    1.0 × 10⁻⁴³ s → 1.0 × 10⁻³⁶ s

    Inflationary Epoch

    1.0 × 10⁻³⁶ s → 10000.0 × 10⁻³⁶ s

    Electroweak Epoch

    10000.0 × 10⁻³⁶ s → 1.0 × 10⁻¹² s

    Quark Epoch

    1.0 × 10⁻¹² s → 0.000 s

    Hadron Epoch

    0.000 s → 1.0 s

    Lepton Epoch

    1.0 s → 10.0 s

    Nucleosynthesis

    10.0 s → 20.0 min

    Recombination

    0.4 million years → 0.4 million years

    Dark Ages

    0.4 million years → 150.0 million years

    First Stars

    150.0 million years → 1.00 billion years

    Galaxy Formation

    1.00 billion years → 13.80 billion years

    Scientific Context

    The Big Bang theory describes how the universe expanded from an extremely hot, dense state approximately 13.8 billion years ago.

    Cosmic Microwave Background: The CMB at 2.725K is the "afterglow" of the Big Bang, released when the universe cooled enough for atoms to form.

    Hubble's Law: Galaxies are moving away from us at speeds proportional to their distance, indicating universal expansion.

    Primordial Abundances: The observed ratio of hydrogen to helium (75:25) matches Big Bang nucleosynthesis predictions.