Water is cheap and useful for many purposes in space (fuel, life support, radiation shielding and maybe even as the bulk part of construction material if covered from sublimation in vacuum). But getting it to orbit is expensive, and it is rare in the inner solar system. So I wonder if there have been any ideas around in this creative business, to "launch" water itself without packaging it.
Water leaves Earth's atmosphere naturally at some rate. Could water conceivable be "steamed" up (steam me up Scotty!;-) to orbit in a way so that at least a useful fraction of it could be collected in LEO? Maybe from a high altitude balloon. Maybe using microwave beams to excite and direct it.