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A CubeSat will test out water as a propulsion system

Novel propulsion systems for CubeSats have been on an innovative tear of late. UT has reported on propulsion systems that use everything from solid iodine to the Earth's own magnetic field as a way of moving a small spacecraft. Now, there is a potential solution using a much more mundane material for a propellant—water.
Water has plenty of advantages going for it as a propellant. Most obviously, it is not volatile or toxic, making it much easier to handle than conventional rocketfuel. One design flaw holding back the adoption of regular rocket fuel into widespread use in CubeSats is their explosive potential. CubeSats are usually housed next to larger, more expensive satellites in the payloads of rockets. If the rocket fuel loaded into a small CubeSat were to ignite unintentionally, it could completely destroy the much larger, more expensive telescope.