![Voyager Proof Test Model undergoing a mechanical preparation and weight center of gravity test](https://science.nasa.gov/wp-content/uploads/2024/04/pia21477.jpg?w=4096&format=jpeg)
Voyager Proof Test Model
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.
Credits: NASA/JPL-Caltech/KSC
TakenJanuary 12, 1977
Image CreditNASA/JPL-Caltech/KSC
Size640x807px