By: Jack Buckby
It weighed barely 570 pounds and ran on plutonium. Its electronics were 1970s vintage. And in September 1979, after six years and billions of miles, Pioneer 11 became the first spacecraft in history to reach Saturn — having flung itself off Jupiter's gravity to get there, and discovering a ring around the planet that no telescope on Earth had ever seen. A small machine built by hand had touched the outer Solar System.














