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## Main Question or Discussion Point

Hi!

I'm doing physics project and I'm stuck with a really awful paradox.

Universe appear to be flat (nearly), so it should expand forever (the critical universe). On the other hand we've got acceleration of the universe so open model. Which model is the right one?

I'm doing physics project and I'm stuck with a really awful paradox.

Universe appear to be flat (nearly), so it should expand forever (the critical universe). On the other hand we've got acceleration of the universe so open model. Which model is the right one?