太阳系十大魅力图片:木卫一有张“比萨脸”(10)
土卫六表面拥有数千个湖泊
10、土卫六表面拥有数千个湖泊
如图所示,这张全景图是“惠更斯”探测器于2005年穿过土卫六浓密的氮气大气层时拍摄的,土卫六是土星最大的卫星。“卡西尼”号宇宙飞船曾在土卫六表面发现乙烷湖泊,从而使这颗卫星成为除地球之外惟一一颗已知在表面存在液态物质的星体,此外,甲烷、乙烷雨也从烟雾弥漫的天空中降落,在土卫六表面上形成碳氢化合物沼泽。
天体生物学家强调称,地球上存在着以吃甲烷为生的微生物,并指出假如类似的生命体也同样在土卫六上发生进化,那将会怎样呢?近期从卡西尼宇宙飞船获得的雷达图像资料显示,土卫六也存在着火山活动,ET外星人搜寻主张者猜测土卫六的地热资源有助于该卫星上生命体的进化生存。
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