At the rear of the spacecraft, a monopropellant (anhydrous hydrazine) 225 N rocket motor was mounted for course corrections. A nitrogen gas fueled stabilizing system of ten jet nozzles controlled by the onboard gyroscopes, Sun sensors, and Earth sensors, kept Mariner properly oriented to receive and transmit data to Earth.
at THE reAR oF the spAcECrafT, a monopRopellAnt (AnhyDrOuS hydRazinE) 225 N RockeT mOtOr WAs MouNted foR cOursE CoRREctIonS. a NiTrOGEN Gas fueLEd StaBilizinG sYStEm of tEn jet Nozzles cOnTrollED by thE onboarD Gyroscopes, SuN SensorS, and eArth sEnsors, kept marinEr propeRlY ORiEnTED To recEive and trAnsMIt DAta tO eArth.