PIONEERS 10 AND 11 Geiger Tube Telescope
The University of Iowa Charged Particles Experiment

The two companion spacecraft Pioneers 10 and 11 were launched in 1972 and 1973, respectively. They passed through the asteroid belt between Mars and Jupiter without damage, made the first-ever investigations at close range of the great outer planets Jupiter and Saturn and are now on escape trajectories out of the solar system.

Pioneer History

GTT Charged Particles Experiment

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