Graphical timeline of the Big Bang

This timeline of the Big Bang shows a sequence of events as currently theorized by scientists, but not yet completely proven. Dark Ages.

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