We prove that in the Inertial Rotational Spacetime Theory (IRST), the cosmic rotation rate omega equals H0 as a necessary consequence of the observed flatness of the universe (Omegaₖ = 0, established to 0. 04% precision). 43 independent observational tests. Decisive test: Euclid DR1, October 2026.
Hamza Hamrouni (Fri,) studied this question.