Astronomers have not yet discovered any of what should be the oldest generation, Population III stars born in a universe without "metals."

天文学家目前还没有发现属于最古老的世代的恒星——星族III的恒星在还没有“金属”的宇宙中诞生。

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Universe Estimate - Total persons or homes in a given population.

群体额评估- 在某一特定人群内的人口总数或总户数。

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Just as many sciences seek to understand large populations by analyzing a smaller representative sample of a population, the Bolshoi simulation focused on modeling a hypothetical representative volume of the universe.

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