tag:blogger.com,1999:blog-13736696.post-7548565188586282292008-03-27T15:13:00.000-07:002008-03-27T15:13:00.000-07:00Given Ceres' density, it's a reasonable guess that it has vast ice deposits. At least one scientist suggests it may have a liquid ocean deep underground, like Europa. We've also seen a number of main-belt asteroids that turn out to be "comets" in the sense that they've been seen to spew out volatiles. All much easier to haul water from than the Martian surface.nicknoreply@blogger.com