Age

Total mass

Temperature (K)

Process

10^-44 s

10¹⁹ GeV

10³²

10⁻³⁵

Planck origin

1 s

10⁶³ GeV

10¹⁰

10⁹

Neutron freezout

1 min

10^64-65 GeV

10⁹

10¹¹

Primordial nucleosynthesis

1 yr

10⁷⁰ GeV

10⁷

10¹²

Atomic processes

0.1 million yr

10⁷⁵ GeV

30.000

10²¹

BAO

10 million yr

10⁷⁷ GeV

3.000

10²³

Decoupling

......

1 billion yr

10⁷⁹ GeV

20

10²⁵

Gravitation

14 billion yr

10⁸⁰ GeV

2.7 (CMB)

10²⁶

Now