In day-to-day human experience, the march of time is constant. Outside the adventures of Marty McFly or Bill and Ted, most people wouldn't normally wonder how time works, but the question of why it moves forwards, has long been on the minds of physicists and philosophers. Now, a professor at UC Berkeley has a new theory: as the universe expands, it drives the expansion of time, which creates a constant series of new "now" moments.
.. Continue Reading Expanding universe may render time travel impossibleCategory: Physics
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