Interesting article.
Now that I think of it, how comes that in all the (known) universe we have ice or ice blocks (such as comets)? Where from does it originates?
I don't know about the rest of the universe, but our comets are supposed to come from the Oort Cloud [1].
The rest of the water needs Hydrogen (The most abundant element in the Universe) and Oxygen (generated by nucleosynthesis in the first generations of stars [2])
[1] So basically we can say that objects such as Oort Cloud are directly connected with the formation of a system and as such they're tied with the star formation itself?
Fascinating theory regarding the ice, however, regarding the formation:
"According to the idea, the solar system had its origin in a gigantic star into which a smaller, dead, waterlogged star fell. This impact caused a huge explosion which flung fragments of the smaller star out into interstellar space where the water condensed and froze into giant blocks of ice. A ring of such blocks formed, which we now call the Milky Way, as well as a number of solar systems among which was our own, but with many more planets than currently exist."
maybe too far fetched? If it was like that we would have already spotted similar galactic formations outside of the Milky Way
