Part two of our series highlighting American-Slovenian scientists and engineers shaping the future of space exploration.
While the four astronauts of Slovenian descent—including Randy Bresnik, commander of the upcoming Artemis III mission—frequently steal the spotlight, a look behind the curtain reveals a remarkable roster of Slovenian experts vital to U.S. space programs. Franklin R. Puhek was a pioneer in guidance systems, designing technologies for Mercury capsules that carried the first Americans into orbit, as well as Tomahawk missiles. Ed Repič led Rockwell’s Space Exploration Team, making foundational contributions to the Apollo 11 spacecraft that enabled humanity's historic first Moon landing. In deep-space exploration, cryogenics expert Dušan Petrač engineered the cooling systems for the pioneering IRAS infrared telescope, while John Repar specialized in space-grade polymers crucial for the Viking and Voyager missions. Finally, John Hrastar left an indelible mark on satellite design, ultimately serving as Director of Systems, Technology, and Advanced Concepts at NASA’s Goddard Space Flight Center. From the dawn of the Space Race to the future of the Artemis program, these minds have quietly shaped the trajectory of human spaceflight.
