Space: CNN.com - Rubbery fuel to power private spacecraft - Jun 16, 2004: “For SpaceShipOne, reaching space takes three things: a pilot, a spacecraft, and enough to propellant to rocket away from Earth. But the fuel in SpaceShipOne’s tank is about as exotic as the spacecraft’s design. SpaceShipOne, set to be the first non-governmental crewed vehicle to reach space, uses a combination of rubber and nitrous oxide — also known as laughing gas — as the powerhouse for test flights and an anticipated suborbital spaceshot set for June 21”










