特殊恒星，在天文学上是指金属丰富，至少在它们的表面上是异常的恒星。
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.
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