T' first free flight o' Unreasonable Rocket's Blue Ball, a peroxide monopropellant vehicle. Begad! I've seen a lot o' rockets fly, and it's still amazin' t' see one hover on a mostly invisible plume o' steam. Well, blow me down! T' rocket runs on hydrogen peroxide and is controlled by jet vanes in t' engine exhaust. unreasonablerocket.blogspot.com Filmed by Ben Brockert o' Masten Space Systems, masten-space.com