In our own solar system, Venus is too hot, Mars is too cold and Earth is just right. Simulations show that making an icy planet habitable is not as simple as melting its ice: many icy bodies swing from too cold to too hot, bypassing just right.

中文翻译：

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行星科学：绕过宜居区域

在我们自己的太阳系中，金星太热，火星太冷而地球恰到好处。模拟表明，使一个冰冷的星球变得可居住并不像融化冰块那样简单：许多冰冷的物体从太冷到太热都会摆动，恰好绕过了冰。