Modern physics The law of conservation of energy states that the total energy of an isolated system cannot change. The zero-energy universe  states that the amount of energy in the universe minus the amount of gravity is exactly zero. That is the only kind of universe that could come from nothing , assuming such a zero-energy universe already is nothing. by Alexei V. Filippenko and Jay M. Pasachoff Such a universe would need to be flat, a state which does not contradict current observations that the universe is flat with a 0.5\% margin of error.
Modern physics The law of conservation of energy states that the total energy of an isolated system cannot change. The zero-energy universe hypothesis states that the amount of energy in the universe minus the amount of gravity is exactly zero. In this kind of universe , matter could be created from nothing through a vacuum fluctuation , assuming such a zero-energy universe already is nothing. by Alexei V. Filippenko and Jay M. Pasachoff Such a universe would need to be flat, a state which does not contradict current observations that the universe is flat with a 0.5\% margin of error.
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hypothesis
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That is the only
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that could come from nothing
, matter could be created from nothing through a vacuum fluctuation