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A Debate Over the Physics of Time

Dan Falk Quanta
According to our best theories of physics, the universe is a fixed block where time only appears to pass. Yet a number of physicists hope to replace this “block universe” with a physical theory of time.

Time’s (Almost) Reversible Arrow

Frank Wilczek Quanta Magazine
The laws of physics work both forward and backward in time. So why does time seem to move in only one direction? One potential answer may also reveal the secrets of the universe’s missing mass.
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