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天文学家发现宇宙最早恒星

Spotting the older stars in action is one of the prime missions of the James Webb SpaceTelescope, to be launched by NASA in 2018. The discovery of such stars “would be wonderful,James Peebles, a Princeton professor and one of the fathers of modern cosmology, saidrecently.

寻找有活动的古老恒星是美国国家航空航天局(NASA)詹姆斯·韦伯太空望远镜的主要任务之一，该望远镜将于2018年发射。普林斯顿大学(Princeton)教授詹姆斯·佩布莱斯(James Peebles)最近表示，发现此类恒星“会是一件非常美妙的事情，他是现代宇宙学奠基人之一。

Now, in a paper to be published in The Astrophysical Journal, an international crew ofastronomers led by David Sobral of the University of Lisbon, in Portugal, and the LeidenObservatory, in the Netherlands, said they had spotted the signature of these first-generationstars in a recently discovered galaxy that existed when the universe was only about 800million years old. Its light has been traveling to us for 12.9 billion years, while succeedinggenerations of stars have worked their magic to make the universe interesting.

在《天文物理期刊》(The Astrophysical Journal)即将刊登的一篇论文中，由葡萄牙里斯本大学(Universityof Lisbon)的戴维·索夫拉尔(David Sobral)、荷兰莱顿天文台(Leiden Observatory)带领的国际天文学家小组表示，他们在最近发现的星系中找到了第一代恒星的识别标志，该星系在宇宙只有大约8亿年历史的时候就出现了。该星系发出的光用了129亿年才到达地球，在此期间，后续的几代恒星施展魔法，让宇宙变得有趣。