通过观察存在于极端环境下的生物，研究人员发现液态水只能在有限范围内的温度和压力下供生物使用这些发现会让科学家对外太空生命的搜寻集中到太阳系来。 莱恩威弗说：“我们猜想在地球上找到的这些限制条件是限制所有以水为支撑的生命的基础。”

After compiling observations of life in extreme environments, the researchers found that liquid water in only a limited range of temperatures and pressures can support life.

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在矢量法基础上，将改进SUSAN算法和限制条件下扩展像素标记法相结合，提出一种改进的星图中星提取方法。

Based on the vector technique, an improved approach to star extraction from star image is proposed, which comprised of the improved SUSAN algorithm and the limited pixel labeling technique.

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