ice evaporates in a vacuum
Wow, did someone rewrite the laws of physics as regards the chemical properties of solid water when I wasn't looking? Goddamn, that must mean that comets don't actually exist, because they are, after all, agglomerations of dust, rock, and... wow, look at that! ice, totally exposed to the vacuum of space, and couldn't possibly survive long enough for our obviously ignorant, non-creationist "scientists" to observe them and catalog four thousand one hundred and eighty-five of them.
And I guess Jupiter's moon Europa is shot, too, because it's just so much ice and rock at what might as well be the partial vacuum of 0.1 Pa. It's incredible that our ignorant, non-creationist astronomers can still see it in their telescopes, considering that ice evaporates in a vacuum. Wow, they must have such incredible imaginations!