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What is an open flat Universe?

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Anonymous

13y ago
Updated: 8/20/2019

This is a theoretical model of the universe.

A Friedman Universe can have positive, zero or negative curvature. If the curvature is positive then the universe is closed and curved. A light ray going in any direction would make a complete circuit if the universe and return to the starting point.

If the universe has zero or negative curvature it is open and unbounded and said to be flat. A light ray would travel in a 'straight' line and not return to its point of origin.

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Wiki User

13y ago

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