Time appeared to move 5 times more slowly in 1st billion years after Big Bang, quasar 'clocks' reveal
Time dilation, brought about by the relativistic expansion of space, has resulted in the observed slowing of 'clocks' in the early universe.
TroibNews 
Time dilation, brought about by the relativistic expansion of space, has resulted in the observed slowing of 'clocks' in the early universe.
