Astronomers have created the most precise map to date of the Milky Way by tracking thousands of big pulsating stars spread throughout the galaxy, demonstrating that its disk of myriad stars is not flat but dramatically warped and twisted in shape.
天文学家通过追踪遍布银河系的数千颗大的脉动变星,绘制出了迄今为止最精确的银河系地图。从地图上看,由无数恒星组成的星系盘并非扁平,而很明显是弯曲的、扭曲的。
The researchers on Thursday unveiled a three-dimensional map of the Milky Way - home to more than 100 billion stars including our sun - providing a comprehensive chart of its structure: a stellar disk comprised of four major spiral arms and a bar-shaped core region.
研究人员于上周四公布了一张银河系的三维地图,其中包括太阳在内共有1000多亿颗恒星。这张地图全面展示了银河系结构:由四个大的螺旋型枝节和一个条状的核心区域组成的星系盘。
'For the first time, our whole galaxy - from edge to edge of the disk - was mapped using real, precise distances,' said University of Warsaw astronomer Andrzej Udalski, co-author of the study published in the journal Science.
研究报告的作者之一、华沙大学天文学家安德烈·乌达尔斯基说:“从星系盘的一端到另一端,我们第一次使用真实、精确的距离绘制了整个银河系的地图。”研究报告发表在《科学》杂志上。
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