Abstract

This article highlights how exploration of deep space requires systems of propulsion that can go the distance. To explore the outer planets in a reasonable time, engines must generate either high exhaust velocity or high specific impulse. The United States recognized early the benefit that nuclear propulsion could provide for interplanetary exploration and ran an extensive research and development program devoted to it. Electric propulsion devices require an energy source and an electric generation method in order to operate. Engines being engineered for deep space missions are, out of necessity, fueled by clean energy from light gas atoms. The fuels are brought to certain physical states and subjected to electric or magnetic fields that accelerate and eject charged particles out of the engine, thereby giving momentum to the spacecraft. These new deep space engines will enable to send missions to the far reaches of the solar system and beyond with exploratory instruments.

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