构成现代世界基础的许多元素起源于中国。
Many elements that make up the foundation of the modern world originated in China.
那些拥有更少氧气和铁元素的恒星能帮助我们深刻了解银河系本身的起源。
Stars with even lower amounts of oxygen and iron offer insight into the birth of the galaxy itself.
如果2005年我们通过卡西尼探测器在土卫二南极地区发现的冰晶喷泉，实际上是土卫二内部的液体水从土卫二逃逸的出口。那么这些冰晶喷泉也许就是现在被发现的钠元素的起源地。
If the source of Enceladus' south polar geysers, discovered by Cassini in 2005, is indeed liquid water, then the geysers will transport the dissolved sodium into space.
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