Imagine dedicating your entire career to a single workplace, only to find it opens doors to some of the most groundbreaking innovations in nuclear energy and space exploration. That’s the story of Dave Hendricks, a U.S. Navy veteran who recently retired after 35 years at the Idaho National Laboratory (INL). But here’s where it gets fascinating: while most people associate INL with nuclear research, few realize its pivotal role in powering spacecraft that have traveled billions of miles from Earth. And this is the part most people miss—Hendricks wasn’t just a bystander; he was a key player in these historic achievements.**
Published at 5:00 pm, February 6, 2026, Hendricks’ story is a testament to the impact of a single career on global advancements. A graduate of Jerome High School, Hendricks began his journey with four years in the U.S. Navy, where he honed his expertise in nuclear systems. This foundation led him to eastern Idaho in 1991, where he joined what was then Argonne National Laboratory–West, located at the INL site. There, he worked on the Experimental Breeder Reactor-II (EBR-II), a revolutionary project designed to push the boundaries of nuclear fuel and safety concepts.
But here’s where it gets controversial: while nuclear energy remains a divisive topic, Hendricks’ work on EBR-II highlights its potential for safer, more efficient power. Is nuclear energy the future, or a risky gamble? Hendricks’ career suggests the former, but the debate rages on. His time at Argonne was transformative, not just professionally but personally. He met his wife, Tammy, in eastern Idaho, and together they’ve built a life spanning 30 years of marriage and two children.
From 1996 to 2002, Hendricks delved into the highly specialized world of nuclear fuel examination at INL’s Hot Fuel Examination Facility and Fuel Conditioning Facility. These secure buildings are where scientists study spent nuclear fuel, using remote-controlled equipment and shielded rooms to ensure safety. This work laid the groundwork for his later role in the engineering lab from 2002 to 2003, where he expanded his expertise in testing, design, and applied research.
A turning point came in 2005 when Battelle Energy Alliance took over management of INL, ushering in a new era focused on national security, energy, and space exploration. And this is the part most people miss: the terrorist attacks of September 11, 2001, indirectly shaped INL’s future. National security concerns led to a reevaluation of vulnerable sites, and INL was chosen for a critical new mission—relocating space-power work from Ohio’s Mound Laboratory to Idaho. This shift brought radioisotope thermoelectric generators (RTGs) into focus—nuclear ‘batteries’ that power spacecraft in environments where solar energy is impractical.
From 2004 to 2017, Hendricks worked in INL’s space power program, assembling the first RTG for NASA’s New Horizons spacecraft, which famously flew past Pluto in 2015. But here’s a thought-provoking question: How much do we rely on unsung heroes like Hendricks for our space exploration successes? His work ensured New Horizons could operate billions of miles from the sun, long after solar panels would have failed. He later supervised the assembly of a second RTG, solidifying his legacy in space technology.
Hendricks’ impact didn’t stop there. He also contributed to powering NASA’s Curiosity and Perseverance Mars rovers, which continue to explore the Red Planet today. Mars’ harsh conditions—dust storms, freezing temperatures, and distance from the sun—make solar energy unreliable, but INL’s nuclear power systems have kept these rovers operational for years. Is nuclear power the unsung hero of space exploration? It’s a question worth pondering.
In his final years at INL, from 2018 to 2026, Hendricks returned to nuclear fuel research, focusing on Post-Irradiation Examination (PIE). Think of PIE as a medical checkup for nuclear fuel—scientists examine used fuel to improve future reactor safety and efficiency. This full-circle return to his roots highlights the depth and breadth of his contributions.
Reflecting on his career, Hendricks cites his work on New Horizons and the Mars rovers as the most rewarding. But here’s a bold statement: Nuclear energy is the right path forward for global power, and Hendricks is a living testament to its potential. He hopes the public will gain a better understanding of INL’s work, which often goes unnoticed. Do we take advancements like safer reactors for granted? It’s a question that invites reflection.
Now 58, Hendricks is embracing retirement with plans to travel with Tammy in their motor coach, explore the Oregon coast, and enjoy hunting, fishing, and restoring old cars. His legacy, however, will endure in the spacecraft and rovers that continue to push the boundaries of human knowledge. What’s your take on nuclear energy’s role in our future? Share your thoughts in the comments—let’s spark a conversation!
