http://www.sciencedaily.com/releases/2015/05/150513132650.htm
As murder mysteries go, it's a big one: how do galaxies die and what kills them? A new study, published today in the journal Nature, has found that the primary cause of galactic death is strangulation, which occurs after galaxies are cut off from the raw materials needed to make new stars.
這是一件大宗的神秘謀殺事件:星系是如何死亡的，是甚麼殺死了他們?一項新的研究指出，已經找到主要導致銀河死亡的原因-----絞殺，它使的星系切斷了產出恆星所需的原料。
by景雯
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