Also on this day in 1977.
Aug 20, 1977
Voyager 2 launched on a mission to observe the outer giant planets. After successful fly-bys of Jupiter, Saturn, Uranus and Neptune, Voyager started on a mission to study the edges of the outer solar system and beyond. It is still sending back data on a regular basis from its position well past Pluto.
NASA's JPL site: <a href="http://www.jpl.nasa.gov/index.cfmhttp://www.jpl.nasa.gov/index.cfm