Constants; Omega

The constant omega is the ratio of the actual density of the universe to the critical density of the universe. It has to have a value only 1 in 10 ^ 15 different from 1, otherwise we could not be here.

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A clear and detailed explanation of why it must have this value is given in the book Just Six Numbers by Martin J Rees.

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last modified 02:40 2002/03/25