The mysterious direction of time reveals something fascinating about our universe

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Caltech theoretical physicist Sean Carroll explains why time moves forward. Read more of Carroll’s insights in his latest new book, “The Big Picture,” which is now available in paperback.

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  • Scribbles

    does this mean that the effects of the big bang will stop after said googol year and if we humans are still alive then, the concept of time will change?

  • Malayan Grago

    Time is uneven; it’s not the same throughout the known universe; just as light speed is variable.