In 1972, NASA launched the exploratory space probe Pioneer 10. According to Leon Jaroff in Time, the satellite's primary mission was to reach Jupiter, photograph the planet and its moons, and beam data to earth about Jupiter's magnetic field, radiation belts, and atmosphere. Scientists regarded this as a bold plan, for at that time no earth satellite had ever gone beyond Mars, and they feared the asteroid belt would destroy the satellite before it could reach its target. But Pioneer 10 accomplished its mission and much, much more. Swinging past the giant planet in November 1973, Jupiter's immense gravity hurled Pi…