Zero-energy universe, a concept that states that the total amount of energy in the Universe is exactly zero
It originated in 1973, when Edward Tryon proposed in the Nature journal that the Universe may have emerged from a large-scale quantum fluctuation of vacuum energy, resulting in its positive mass-energy being exactly balanced by its negative gravitational potential energy.
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In 1973, Edward Tryon proposed the zero-energy universe hypothesis: that the Universe may be a large-scale quantum-mechanical vacuum fluctuation where positive mass-energy is balanced by negative gravitational potential energy.