The water exists as huge gaseous clouds that absorb and emit light, allowing powerful telescopes to detect them across the mind-boggling distances of space.
水以巨大的气态云团的形式存在，吸收并发出光线，让强大的望远镜可以穿过令人难以置信的空间距离检测到它们。
Just a fortnight ago, astronomers using the Hubble space telescope identified water vapour in the atmosphere of an exoplanet, albeit a gaseous exoplanet some 150 light years away.
就在两周前，天文学家使用哈勃太空望远镜，在一颗外星行星的大气中确定了水蒸气的存在，尽管该行星离我们有大约150光年。
Until this week Saturn's small moon Rhea was the only known solid space object thought to have a ring. (Other known ringed bodies, such as Saturn, are mainly gaseous.)
直到本周土星的小卫星土卫五还被认为是唯一具有环的立体空间物体。(其它已知有环的天体，例如土星，大部分是气态的。)
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