Measuring space
PASADENA, CA—Unmanned spacecraft such as Voyager, Galileo, Cassini, and Spirit explore the unknown and expand human knowledge. The job of testing these spacecraft systems—and the measurement instruments they carry—falls to the Measurement Technology Center (MTC) staff at NASA's Jet Propulsion Laboratory (JPL).

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Guide the light
Make sense of lens specs
Boundary scan goes underground
Tests ride the PCI Express