John Casani is a retired Jet Propulsion Laboratory employee who served as project manager for the Voyager, Galileo and Cassini missions, all of which used RTG power systems.

The latest from John

  • A NASA technician works on a 10-kilowatt Stirling Power Conversion Unit at Glenn Research Center. (Credit: NASA Glenn Research Center)
    From the Magazine

    Op-ed | An argument for space fission reactors

    America’s space program has long held a special place in the public’s imagination, but NASA missions are limited by budget constraints. NASA must use its funding wisely to implement balanced, cost-efficient programs to develop enabling technologies, such as technologies to power future NASA missions.