The submitted title was "Rosetta first results: ocean water not from comets". Since the article's own title is not very informative, we changed it to the first sentence, which is. We also changed the url from http://blogs.esa.int/rosetta/2014/12/10/rosetta-fuels-debate..., which points to this.
I understand why you'd say that, but the cure would be much worse than the disease—the top subthreads would all be about the edits and editing practices.
Right. We don't have a very large sample size currently, so it's a bit premature for definitive statements such as "earthly water not from comets".
All we know is that this comet shows a different fraction of deuterium, compared to Earth, and some other comets we've checked are all different. So the jury is still out. We need more data, lots more.
