This archival photo shows the Voyager Proof Test Model undergoing a mechanical preparation and weight center of gravity test at NASA's Jet Propulsion Laboratory, Pasadena, California, on January 12, 1977. The stack of three white cylinders seen near center is a stand-in for the spacecraft's power generators (called RTGs). Above that, a silvery canister holds the spacecraft's magnetometer in its stowed configuration.
Voyager is managed for NASA by JPL. JPL is a division of the California Institute of Technology, Pasadena.
For more information about Voyager, visit http://www.nasa.gov/voyager and http://voyager.jpl.nasa.gov.
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