"Things You Wouldn't Know If We Didn't Blog Intermittently."
17 January 2016
Water ice confirmed on the surface of a comet
This apparently isn't unexpected, as this Reddit thread discusses. But it still boggles my own mind, since I spent the first half-dozen decades of my life believing that water in any form would sublimate instantly and could therefore not exist in an object traveling through a vacuum.
And it is water ice, btw, not frozen methane of ammonia.