第一代恒星

有关宇宙起源的大爆炸理论的出现，迫使天文学家认识到，第一代恒星肯定不包含金属元素；它们被称为第三星族（PopulationIII）。

The advent of the Big Bang theory of the origin of the universe forced astronomers to realize that the first stars must have had no metals at all ; those are known as Population III.

银河系中探测第一代恒星的研究

The Research on Detecting the First Generation of Stars in the Galaxy

有关宇宙起源的大爆炸理论的出现，迫使天文学家认识到，第一代恒星肯定不包含金属元素；

The advent of the Big Bang theory of the origin of the universe forced astronomers to realize that the first stars must have had no metals at all ;

太阳等现代恒星拥有大量重元素，也就是金属元素，但在宇宙大爆炸之后，构成第一代恒星的元素只有氢、氦和少量锂。

Modern-day stars like our sun have a healthy mix of heavy elements , known as metals , but in the aftermath of the Big Bang only hydrogen , helium and small traces of lithium were available to make the first stars .