每隔10天的周期就会有一些特殊的恒星群出现，这些恒星群被称为decans。
Each period of ten days was marked by the appearance of special groups of stars called decans.
造父是种特殊的恒星，它能以可以预测的方式周期脉动，就像I型超新星，他们被当做是一样的，不管他们在那里。
Cepheids are a special type of star that pulsates in a predictable way, and like the type 1a supernova, they are assumed to be the same, no matter where they are located.
但是，这个理论只有做如下假设才成立，即：在黑洞有机会形成前，其特殊条件恰好阻止气体云转变成恒星。
But that works only with the assumption that very special conditions were in place to prevent the gas from turning into stars before a black hole had a chance to spring to life.
恒星中的分子会在光谱中留下特殊标识，通过摄谱仪就能识别。
Molecules around stars leave imprints in their light, which the spectrograph can detect.
然而，我们银河系十分特殊，因为我们就在它里面，能够就近观测它的单个恒星的组分。
However, our galaxy is so special because we can take a closer look at its individual stellar components.
这个特征表明了来自恒星的气体是从一个特殊方向发射的。
These features appear to represent the ejection of gas from the star along a specific direction.
这个特征表明了来自恒星的气体是从一个特殊方向发射的。
These features appear to represent the ejection of gas from the star along a specific direction.
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