"One of the most fundamental properties of the Universe is its density, or more usefully the ratio Ω = ρ/ρc of the density to the critical value required for closure. The feeling among cosmologists is that the Universe is open, with Ω perhaps in the range 0.1–0.5 (see ref. 1)." This would make it's density lower than 1, therefore making it's negative curve to an open universe. If it's value "was" or is equal to 1, it would turn up to a flat..

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Answer

Con: The four main forces in the universe are weak nuclear, strong nuclear, gravitational and electromagnetic. If we see the charge (electromagnetic) of the dark energy, dark matter and regular matter, we can observe that the charge is neutral, leaning into a flat universe.

Shape and size of the universe

Pros

Cons

The four main forces in the universe are weak nuclear, strong nuclear, gravitational and electromagnetic. If we see the charge (electromagnetic) of the dark energy, dark matter and regular matter, we can observe that the charge is neutral, leaning into a flat universe.

Selected claim, supporting its parent

Con claim 1, children below

The four main forces in the universe are weak nuclear, strong nuclear, gravitational and electromagnetic. If we see the charge (electromagnetic) of the dark energy, dark matter and regular matter, we can observe that the charge is neutral, leaning into a flat universe.