If the density just equals the critical density, the universe is flat, but still presumably infinite.
如果密度正好等于临界密度，宇宙则是平坦的，但很可能仍然是无限的。
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While it has not yet been determined whether this mass is sufficient to close the universe, some physicists consider it significant that estimates are converging on the critical value.
The critical ingredient to growing a lending business is to expand the universe of parties willing to make loans to the weakest credits based upon the most liberal credit standards.