We've done several fly-bys and we've even hit one with a 640 pound chunk of Washing Machine sized copper which all caused untold bafflement in the orthodox cosmology and astronomical communities, but not in the Electric Universe cosmologists or Astronomers who actually made predictions on what would be found, all of which were found to be absolutely factual. The one thing they have NEVER found was water in any appreciable quantities in wet liquid, solid, ice forms at all. None, nada, zip. The comets we've visited have all been essentially the color of black pavement. . . if not blacker. And are indistinguishable from every other asteroid (or planetoid) we've encountered. They are rocks. Not ice, dirty snowballs, or anything of the kind.
Yet, this article I posted above still referred to comet Churyumov-Gerasimenko 67P as "the 4km long chunk of ice." You'd think that sooner-or-later they'd start to get a clue after visiting half a dozen or so comets and finding they are NOT a "chunk of ice."
The test of any theory is how well does it predict future findings . . . and the orthodox theory is failing miserably while the EU theory is taking the field by storm in the prediction area. . . but the orthodoxy simply is standing their like the three chimpanzees:

Talk about being wedded to a failed theory.
I wonder what Dark Matter sounds like.
http://www.esa.int/Our_Activities/Space_Science/Rosetta/Highlights/Top_10_at_10_km
If NASA doesn’t pretend there’s water out there, it undermines the search for “life”.
They are also the prostitutes of “Global Warming”.
They don’t have to believe it, just be happy to cash the check to go look.