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American Focus > Blog > Tech and Science > Where does time actually come from?
Tech and Science

Where does time actually come from?

Last updated: July 2, 2025 12:55 am
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Where does time actually come from?
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The universe follows the arrow of time

Wavebreakmedia Ltd DW1802_1 / Alamy

Exploring the origin of time is a perplexing endeavor that has intrigued physicists and philosophers for decades. The concept of the “arrow of time” delves into the fundamental laws of physics governing energy, heat, and entropy, with entropy playing a crucial role in the directionality of time’s flow.

Entropy, often associated with disorder, actually signifies the number of ways a macrostate can be arranged from its microstates. As time progresses, entropy tends to increase, leading to the perception of time moving from low to high entropy states. This shift from ordered to disordered states is the essence of the arrow of time.

However, a significant conundrum arises when considering the initial state of the universe. The “past hypothesis” suggests an extremely low-entropy state at the beginning of time, raising questions about the necessity of such a state and its relationship to the big bang.

Moreover, the reversible nature of physical laws at quantum scales poses a challenge to the unidirectional flow of time. While microscopic phenomena exhibit time symmetry, macroscopic events demonstrate a clear arrow of time from past to future.

In a groundbreaking study, researchers at Paris-Saclay University constructed a simplified “toy universe” where time’s arrow emerged organically without relying on a specific low-entropy starting point. This model universe, expanding akin to our own cosmos, invalidated the need for a past hypothesis and opened up possibilities for alternative cosmic scenarios like the big crunch or big bounce.

This innovative approach challenges traditional views on the origin of time and the uniqueness of low-entropy states. By reimagining the universe as a dynamic system with dual expanding universes, each with its distinct temporal progression, physicists are exploring new avenues in understanding the nature of time.

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Renowned philosopher David Albert advocates for a more empirical approach to unraveling the mysteries of time, emphasizing the importance of observational evidence over theoretical conjectures. By bridging the gap between controlled experiments on entropy and the vast expanse of the universe, researchers aim to refine our understanding of time’s enigmatic origins.

As we continue to probe the depths of time’s essence, the quest for its ultimate source remains an ongoing dialogue between science and philosophy. While the answer to where time truly comes from may elude us for now, the journey of exploration propels us towards a future where time’s enigma may eventually be unraveled.

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1 Comment
  • Jeff McKee says:
    July 2, 2025 at 6:21 pm

    Time like all dimensions is a direction. One point in time dilating into every direction of space, a direction set with a bang. There is no standing wave, they are comoving waves in time, that give the illusion of static in space. Where ever you use mass in an equation it is a co-moving centerpoint in time.

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