Time log of the happenings in the Universe, from the Big Bang beginning to the future ending. To cover a wide range in time, a 'logarithmic clock' is used. After each tick N, the Universe is 10 times older than the previous one.Tick range: N=log(time)= +40 to +65 N Event ---- ------------------------------------------------------ ---- ------------------------------------------------------
- +40 : "Black Hole" Era - black holes are the only massive objects
- +44 : Axions decay into photons *** Axions have never been observed ***
- +65 : Black holes of 1 solar mass emit "Hawking radiation" and shrink