missississi

August 24, 2006

是什么造成了火星上季节性的暗斑?

Filed under: 客舟

火星上含沙气流喷射假想图

每当春天,火星极地附近会出现奇怪的暗斑,几个月以后消失。典型的暗斑直径50米,形状象风扇。

一种猜想是春天变暖的时候,二氧化碳冰开始融化,带着沙从地下喷出来形成这些暗斑。

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