KEY TERMS

• • Hydrazine

    Hydrazine is a chemical used as fuel in many spacecraft, including Juno, for maneuvering in space. Hydrazine is sometimes used by itself (as a monopropellant) in maneuvering thrusters, and sometimes with liquid oxygen (combined to form a bi-propellant) in rocket engines. Hydrazine is a hazardous chemical and is treated with great care by technicians when fueling a spacecraft in preparation for launch.