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Last updated: : August 29, 2025

Why ‘nothing’ is impossible: Do nothingness and emptiness exist?

The Elusive Concept of Nothingness

Since Antiquity, philosophers and scientists have questioned the nature of nothingness and vacuum (Parmenides, Democritus, Pascal, Kant, Heidegger...). These metaphysical notions, though widely explored, remain enigmatic.

The Paradox of Nothingness: No Matter, No Energy, No Information!

Nothingness, defined as total absence (of matter, energy, information, spacetime), cannot be conceived without attributing some form of existence to it. As soon as we imagine it, it becomes something - hence the paradox. If nothingness cannot create or be thought of, let us turn to the vacuum, distinct from nothingness.

The Vacuum: A Complex Physical Reality

Unlike nothingness, vacuum is the absence of matter in a volume of space. But does it truly exist?

Classical Physics and Relativity

Quantum Physics and Fundamental Limits

"Just as the speed of light is unsurpassable, absolute zero is unattainable. Radiation completely fills the 'vacuum', making it dynamic."

Why Is There Something Rather Than Nothing?

Leibniz's Question

Gottfried Wilhelm Leibniz (1646-1716) formulated this paradox: "Why is there something rather than nothing?" "Nothing" seems simpler, yet our Universe is very real.

The Big Bang and Quantum Vacuum

Minimum Energy: The Eternal Cycle of Vacuum

Towards a Return to the Ground State

The expanding Universe is gradually cooling. Its residual energy tends towards an absolute minimum, corresponding to the ground state of the quantum vacuum.

Cyclic Renewal

"This indestructible energy background, in perpetual renewal, could be the key to a cyclic cosmology, where each Universe is but an ephemeral fluctuation of an eternal vacuum."

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