NASA喷气推进实验室的科学家琳达•斯皮尔克13日在资讯发布会上表示：“这是一个非常重要的发现，因为氢气或许是土卫二海洋中可能存在的微生物的潜在化学能量 "We now know that Enceladus has almost all of the ingredients you would need to support life as we know it on Earth," she said.

她说：“我们现在知道，土卫二上几乎具备所有已知的地球生命必需物质。”

The findings were published Thursday in the journal Science.

这些发现13日被发表在《科学》杂志上。

"This is the closest we've come, so far, to identifying a place with some of the ingredients needed for a habitable environment," Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate, said in a statement. "These results demonstrate the interconnected nature of NASA's science missions that are getting us closer to answering whether we are indeed alone or not."

NASA科学使命理事会副主任托马斯•泽尔布肯在一份声明中表示：“在我们寻找拥有宜居环境所需物质的星球期间，迄今为止，这是离这一目标最近的一次。这些观测结果触及NASA科学任务互通的本质：弄清我们是否为宇宙中唯一的生命。”

NASA also announced that the Hubble Space Telescope observed what may have been a water vapor plume emerging from the surface of Jupiter's moon Europa in 2017, and again around the same area in 2016.

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