Omega (theory of relativity)

In the theory of relativity, "Omega" often refers to the density parameter of the universe, represented as Ω. It helps describe the universe's fate by comparing its actual density to a critical density needed for a flat geometry. If Ω is greater than 1, the universe is closed and might eventually collapse. If Ω is less than 1, it’s open and will expand forever. If Ω equals 1, the universe is flat and will expand indefinitely at a diminishing rate. This concept is vital for understanding the dynamics and ultimate destiny of the cosmos.