The Paramount task here facing observational astronomy is to study real interstellar clouds.
实测天文学在这里所面临的头等任务是研究实际的星际云。
Stars are born in these interstellar clouds, which are located in the spiral arms of our Milky Way galaxy.
在我们银河系里，恒星就是在位于银河系旋臂上的这种星际气云中产生的。
It has been shown that stars, including our own solar system, are formed by contraction of cold and dark interstellar clouds.
研究表明，包括太阳在内的恒星是由冷暗的星际分子云收缩形成的。
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