Death Star Caught In Act, All Wet 14
NaturePhotog writes: "No, it's not CNN bad-mouthing the Empire's latest creation, it's astronomers catching a dying star in the act of becoming a nebula. Radio waves emitted by water molecules helped provide the age of the event."
Re:Water molecules? (Score:2, Interesting)
Water will not exist as a liquid in space, basically for the reasons you cite (plus, with effectively zero pressure, the water will just evaporte pretty quickly). But water vapor can exist inside the clouds of other gases, particular atomic hydrogen. Water, being such a great absorber and emitter of radiation, is really easy to spot, so we talk about it a lot.