Time ran slower in the past, study finds

Physicists from the University of Queensland in Australia have found evidence that time ran slower in the past. In this video I explain how time-dilation is related to redshift, what that means for light from distant galaxies, and what happens to an observer who falls into a black hole. This video comes with a quiz which you can take here: http://backreaction.blogspot.com/2024/07/time-ran-slower-in-past-study-finds.html