We’ve found water on Ceres!
This just in from Space.com:
Astronomers have discovered direct evidence of water on the dwarf planet Ceres in the form of vapor plumes erupting into space, possibly from volcano-like ice geysers on its surface.
Using European Space Agency’s Herschel Space Observatory, scientists detected water vapor escaping from two regions on Ceres, a dwarf planet that is also the largest asteroid in the solar system. The water is likely erupting from icy volcanoes or sublimation of ice into clouds of vapor.
This is big news. It’s a major scientific breakthrough, proof of something that’s only been suspected about Ceres up to now, and it comes a year earlier than I expected, since the Dawn probe won’t reach Ceres until early 2015. It also has important ramifications for our future in space. In Only Superhuman, I established Ceres as the primary source of water and organic molecules for space habitats throughout the Main Asteroid Belt and inner system. This was based on astronomers’ estimates that Ceres might potentially have more fresh water on it than Earth does (since most of ours is salt water). Now we have verification for that, and it confirms (or at least makes it far more likely) that future space colonists and asteroid miners will have access to abundant sources of water without needing to lug it up out of Earth’s gravity well or go clear out to the moons of Jupiter and Saturn.
It’s also nice to get confirmation that what I put in my novel wasn’t wrong. Although it never occurred to me to mention a water-vapor atmosphere or cryovolcanoes in my descriptions of Ceres. Just as well, I suppose, since the volcanoes are unconfirmed. If and when I get to do a sequel, hopefully the timing will be right to work in Dawn’s findings. Hmm, the article says it’s more likely just sublimation, but I’m hoping for icecanoes (to use the Doctor Who term). Those would be cooler to write about. (Literally…)