This photograph from Sept. 5, 1977, shows the launch of NASA's Voyager 1 spacecraft from NASA's Kennedy Space Center at Cape Canaveral, Fla.

The Voyager spacecraft were built and continue to be operated by NASA's Jet Propulsion Laboratory, in Pasadena, Calif. Caltech manages JPL for NASA. The Voyager missions are a part of NASA's Heliophysics System Observatory, sponsored by the Heliophysics Division of the Science Mission Directorate at NASA Headquarters in Washington.

For more information about Voyager, visit http://www.nasa.gov/voyager and http://voyager.jpl.nasa.gov.