Perseverance rover (IMAGE) DOE/Oak Ridge National Laboratory Caption The Perseverance rover, headed for Mars this summer, carries a plutonium isotope produced at ORNL, the first domestic production in about 30 years. As it decays, Pu-238 will power the rover and its instruments across the planet. Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.