Event

Temperature

Energy

Time

Inflation ends

10²⁹ K

10¹⁶ GeV

10⁻³⁵ s

CDM decouples, GUT scale

10²⁹ K

10¹⁵ GeV

10⁻³⁶ s

Baryons form

10¹⁶ K

1 TeV?

10⁻¹² s

El-weak force

10¹⁵ K

100 GeV

10⁻¹¹ s

Hadrons form

10¹² K

150 MeV

10⁻⁵ s

Neutrinos decouple

10¹⁰ K

1 MeV

1 s

Nuclei form

10⁹ K

100 keV

200s

Atoms form

3460 K

0.29 eV

290 ky

Photons decouple

2970 K

0.25 eV

370 ky

First stars

50 K

4 meV

100 My

First galaxies

12 K

1 meV

400 My

Dark energy domination

3.8 K

0.33 meV

9 Gy

Now

2.7 K

0.24 meV

13.8 Gy