距最近一项研究发现，在距地球75光年的地方，隐藏着一颗棕矮星，它是迄今为止所发现的最冷最暗的星。
A brown dwarf found hiding 75 light-years from Earth is the coldest and dimmest ever discovered, a new study reports.
举个例，他们根据现存的星椋鸟的毛色确定了一片有4.7亿年的羽毛有暗彩色光泽 。
They determined, for example, that a 47-million-year-old feather had the dark iridescent sheen found on starlings today.
马勒和其他一些人认为，这颗暗星绕太阳运行一周大约要用2600万年的时间。
Muller and others believe that the dark star probably takes about 26m years to complete an orbit around the sun.
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