These are the types of elements that form the ultimate building blocks for habitable planets 这些元素都是形成可居住行星的根本基石。
2.
These environments may be good analogues for early life on earth and are the subject of research by astrobiologists as models for primitive life on other habitable planets 这些温泉和地球早期生命环境足可比拟，天体生物学家更以此研究其他行星孕育原始生命的可能性。
3.
Centaurus starships voyage from atma in search of habitable planets around foreign stars . the expansion of centaurus civilization beyond the system of new delta ensues 半人马恒星飞船从阿玛出发航行，寻找围绕着外来星球的适宜人类居住的行星。在新德尔塔系统后面的半人马星座文化的繁荣接踵而至。
