Voyager Spacecraft Prototype MR-103B Engine
NASA habitually makes its spacecraft incredibly durable. None more so than the Voyager I and II. Launched in 1977 the two spacecraft were the first to flyby Jupiter, Saturn, Uranus and Neptune and returned some of most iconic photos in planetary exploration,
Over 14 billion miles from Earth, so far it takes over 20 hours for their signals to reach us, the twin spacecraft still return import science data as they head towards interstellar space.
This engine model is a variant of the 16 small adjustment engines the spacecraft. Using hydrazine as its fuel, each engine could produce up to about 100lbf of thrust. First used in 1977, descendants of this little engine are still in use on NASA’s new Orion manned spacecraft.